Nutanix NCA 7.5 — Course-to-Exam Study Guide

Built by mapping the 8-module Nutanix Hybrid Cloud Fundamentals (NHCF 7.5) course against a 50-question NCA practice bank. Organised by what actually gets tested, not by course order.

This page decides what to study. ToastNix holds the notes for every blueprint objective, and every module below links straight to them. Blueprint cross-reference → · Hands-on labs → · Flashcards → · Dictionary →

How this guide was built

Every one of the 50 practice questions was tagged to the NHCF module that teaches it, and separately to the NCA 7.5 blueprint objective it tests. The counts below are the result.

Three structural facts about this bank, and how they differ from NSE 4:

The real exam is 50 questions in 90 minutes, scored 1000–6000 with 3000 to pass. The timed practice exam below uses the same length and clock.

Coverage map — course module vs. question count

ModuleCourse labsQsShareVerdict
M2 Hardware and Storage ConceptsExploring the hardware and storage-container dashboards; creating a storage container.1530%Heaviest module by far
M1 IntroductionAccessing and exploring Prism Element and Prism Central; deciding when to use Prism Central versus Prism Element.918%Which Prism, which product
M7 Monitoring Cluster Performance and HealthAdding built-in charts to the Analysis dashboard; creating a custom chart; creating, downloading and scheduling reports; monitoring cluster health; collecting logs.714%Which view shows what
M8 Understanding Licensing and Performing UpgradesExploring the LCM dashboard; performing inventory at a connected site and at a dark site.612%All LCM, no licensing
M5 VM ManagementExploring the VMs dashboard; creating VMs; creating a recovery point; cloning a VM; exporting a VM as an OVA.510%Placement and policy
M3 NetworkingViewing network configuration in Prism Central; using the Network Visualizer.48%Bond modes and IPAM
M4 Image ManagementExploring the images dashboard; uploading and importing an image to Prism Central; uploading an image using Prism Element.36%Categories, twice
M6 Backup and Disaster Recovery FundamentalsCreating protection domains and a local VM restore; configuring remote sites; protection domains using remote sites; VM migration.12%A whole course day for one question

Module M2 alone is 30% of the bank. M6 takes most of a course day and is worth one question here, though the blueprint tests snapshots under VM tasks.

Priority tiers

Tier 1 — must be automatic (31 questions, 62%)

M2 Hardware and Storage Concepts, M1 Introduction, M7 Monitoring Cluster Performance and Health.

These three are nearly two-thirds of the bank. Storage policy and failure behaviour (M2), which Prism does what (M1), and which monitoring view answers which question (M7). Get these to the point where you answer without thinking.

Tier 2 — solid working knowledge (15 questions, 30%)

M8 Understanding Licensing and Performing Upgrades, M5 VM Management, M3 Networking.

LCM workflow, VM placement and the three bond modes. Fewer questions, but each one is a single fact you either know or don’t.

Tier 3 — know the vocabulary (4 questions, 8%)

M4 Image Management, M6 Backup and Disaster Recovery Fundamentals.

Images and data protection. Learn the handful of facts and move on.

Tier 1 deep dive

M2 — Hardware and Storage Concepts 15 questions

Key takeaways

  1. Policies live on the storage container: RF, compression, deduplication and erasure coding. Not on the VM, not on the storage pool.
  2. RF is copies of data (RF2 = 2, RF3 = 3). Fault tolerance is failures survived (FT1 = 1, FT2 = 2). RF3 / FT2 needs five nodes.
  3. Compression suits nearly every workload. Erasure coding replaces RF copies with parity for write-cold data. Dedup pays off where VMs share blocks.
  4. When a node or its CVM fails, VMs keep running: HA restarts guests elsewhere, and autopathing moves I/O to another CVM.

Also inToastNix 1.1 2.3 3.1 3.2·Cards 1.1 2.3 3.1 3.2

The course covers: Nodes, blocks and clusters; physical storage types; AOS distributed storage; storage pools, containers, redundancy and replication factor, capacity reservation, cluster resiliency, snapshots. Course labs: Exploring the hardware and storage-container dashboards; creating a storage container.

What the bank actually tested

This is the heaviest module by a distance: 15 of 50 questions. Almost none ask you to do anything. They ask where a setting lives, how many copies or nodes a level needs, and what the cluster does on its own when something fails. Q30 is the only exhibit, and it is a disk diagram you read for failure domains.

Facts to know cold

  • Containers carry the policy. RF and every efficiency feature are container settings, which is why Q1 and Q40 have the same answer asked two ways. Q1Q40
  • RF2 means two copies of every write, placed on different nodes. RF3 means three, and the cluster must be able to survive two failures, so five nodes minimum. Q20Q24
  • RF1 exists for scratch and disposable data, and has prerequisites, the node count among them. Read the RF1 page before you trust it with anything. Q28
  • Efficiency, matched to data: compression for nearly everything; erasure coding (EC-X) replaces full RF copies with parity for write-cold data; dedup for full clones and VDI. Q23Q12
  • The Distributed Storage Fabric is the scale-out storage layer. Inside it, data is written as extents, grouped into extent groups, and each extent group is a file on a CVM-owned disk. Q16Q34
  • Volumes are reached through the Data Services IP. External iSCSI clients point at it, and the cluster redirects them to a CVM. Q19
  • Failures, and what the cluster does by itself. A failed node or a host with no networking: HA restarts its VMs on the others, if there is spare capacity. A sick CVM (Stargate, Cassandra): I/O is redirected to another CVM. An SSD failure in a hybrid node: the bank keys a CVM reboot. Q14Q29Q27Q44
  • FT1 / RF2 survives one failure domain. Disks lost on two different nodes at once can make some data unavailable. Q30

Trap: “storage pool” is the distractor for every policy question. A cluster normally has one pool holding all the physical disks; it carries no RF or efficiency setting. The container is the logical slice that does.

Drill

Create two containers on your CE cluster, one with compression and one without, and open each one’s settings to see exactly which policies live there. Then power off a node and watch the Data Resiliency widget. Lab 2 and Lab 3 walk through both.

Documentation

M1 — Introduction 9 questions

Key takeaways

  1. Prism Element manages one cluster and is served by every CVM. Prism Central is a separate VM that manages many clusters and owns the multi-cluster features: RBAC, categories, reports, runway.
  2. Pulse sends telemetry to Nutanix. Disable it only under Nutanix Support’s guidance. Data obfuscation masks names and IPs first.
  3. Match products to jobs: Objects = S3, Files = SMB/NFS, Volumes = iSCSI block for clustered apps such as SQL.
  4. A two-node cluster needs a Witness VM to stay available through a node failure.

Also inToastNix 1.1 1.2 3.1 4.2·Cards 1.1 1.2 3.1 4.2

The course covers: Three-tier vs hyperconverged infrastructure; Nutanix Cloud Solution Packages; getting started with Prism Central and Prism Element; Pulse; when to use which Prism; cluster setup fundamentals; cluster-level security. Course labs: Accessing and exploring Prism Element and Prism Central; deciding when to use Prism Central versus Prism Element.

What the bank actually tested

The bank uses this module for “which Prism” and “which product” questions. If a feature spans clusters (RBAC, categories, reports), the answer is Prism Central. If it is about one cluster’s own console, it is Prism Element on a CVM IP.

Facts to know cold

  • Prism Element is on every CVM. Reach it on any CVM IP or the cluster virtual IP, port 9440. Q2
  • From Prism Central, open a registered cluster through the cluster quick-access in the main dashboard widget. Q5
  • RBAC is configured in Prism Central. Prism Element has local users and roles, but role-based access across clusters is a Prism Central feature. Q6
  • Pulse: leave it on. Disable it only with Nutanix Support. Data obfuscation is the feature that protects private information in what it sends. Q45Q48
  • Unified Storage, by protocol: Objects for S3 and petabyte-scale unstructured data; Volumes for shared block storage, which is the fit for a Microsoft SQL cluster. Q21Q50
  • Two-node ROBO clusters need a Witness VM at a third site to arbitrate after a node failure. Q35
  • App Mobility Fabric is the name for moving applications and data freely between hypervisors and clouds. Q42

Trap: the Foundation VM IP and the AHV host IP both appear as distractors for “how do I reach Prism Element”. Foundation is only used to image nodes and build the cluster; the host runs the hypervisor, not Prism.

Drill

Log into Prism Element on each of your three CVM IPs and on the virtual IP, and confirm they are the same console. Then open Settings → Pulse and read what is sent and what obfuscation hides. Lab 1.

Documentation

M7 — Monitoring Cluster Performance and Health 7 questions

Key takeaways

  1. A metric chart is one metric across several entities. An entity chart is several metrics for one entity.
  2. Red heart on Home → open the Health dashboard to find the failing check.
  3. Recurring summaries for people are scheduled reports in Prism Central. Alert emails need SMTP configured.
  4. Runway is on the Prism Central dashboard. Discoveries on the support portal flag clusters hit by known issues.

Also inToastNix 4.1 4.2 4.3 4.4·Cards 4.1 4.2 4.3 4.4

The course covers: Sessions, charts and reports in Prism Central; alerts and events; alert emails; log collection; creating a support case on the Nutanix Support Portal. Course labs: Adding built-in charts to the Analysis dashboard; creating a custom chart; creating, downloading and scheduling reports; monitoring cluster health; collecting logs.

What the bank actually tested

Seven questions, all “which tool shows me this”. Learn where each view lives: charts in Analysis, history versus present, reports versus alerts, Prism Central versus Prism Element versus the support portal.

Facts to know cold

  • Metric vs entity chart. Logical usage for three containers on one chart is a metric chart. Q15
  • History needs Analysis. To see whether memory has been evenly spread across an app’s VMs over time, chart it per VM. Alert policies and list filters only show the present. Q13
  • Health dashboard is where a red heart is explained, check by check. Q47
  • Reports in Prism Central can be scheduled and emailed weekly to app owners. Q18
  • No emails after an expansion? Configure SMTP. Without it nothing can be emailed. Q46
  • Cluster runway lives on the Prism Central main dashboard. Q3
  • Discoveries on the Nutanix Support Portal identify clusters affected by known issues. Q4

Trap: “create an alert policy” sounds like monitoring, but an alert only fires going forward. Any question that says historically or over time wants a chart or a report.

Drill

Build one metric chart and one entity chart in Analysis, run NCC, open the Health dashboard, and collect a log bundle. Lab 8.

Documentation

Tier 2 deep dive

M8 — Understanding Licensing and Performing Upgrades 6 questions

Key takeaways

  1. Run an inventory first. It also updates the LCM framework itself.
  2. Dark sites: either a local web server with bundles extracted into release, or Direct Upload.
  3. Check the Compatibility and Interoperability Matrix before any AOS or hypervisor upgrade.
  4. An AOS upgrade restarts CVMs, not hosts. Guest VMs keep running where they are.

Also inToastNix 2.4 3.3·Cards 2.4 3.3

The course covers: License Manager; license details in Prism and on the Support & Insights Portal; licensing a cluster; Life Cycle Manager and its workflow; the LCM dashboard; performing an inventory. Course labs: Exploring the LCM dashboard; performing inventory at a connected site and at a dark site.

What the bank actually tested

Six questions, all LCM. The bank wants the LCM workflow in order (inventory → pre-checks → update), the two dark-site methods, and Redfish’s one selling point. Licensing itself is not tested in this bank, though the blueprint lists it (objective 2.4).

Facts to know cold

  • Inventory updates the framework. That is how you get the latest LCM. Q25
  • Dark sites: Direct Upload is the feature that simplifies them; with a local web server, the framework bundle goes into the release directory. Q22Q10
  • Redfish: BMC and BIOS updates finish about twice as fast. Q26
  • Compatibility matrix before upgrading AOS and the hypervisor on vSphere. Q36
  • AOS upgrade: rolling CVM restarts. The bank keys “VMs live-migrate”; the defensible reading is that VMs stay on their host. See Q43. Q43

Trap: “Run LCM pre-checks” and “Settings → Upgrade Software” look like ways to update LCM. Pre-checks validate an update you already chose; 1-click upgrade is the older path. Inventory is what refreshes the framework.

Drill

Run an LCM inventory on the CE cluster and watch the task list: the framework update runs before the inventory. Then open LCM settings and find where a dark-site URL would go. Lab 9.

Documentation

M5 — VM Management 5 questions

Key takeaways

  1. Categories are how policies scale: tag the VMs, attach the category to the policy.
  2. Per-host appliance VMs (firewalls, AV) are Agent VMs. VM-VM anti-affinity is created with aCLI.
  3. Flash Mode pins a VM’s data to SSD. ADS rebalances VMs away from hotspots.

Also inToastNix 2.1 4.4·Cards 2.1 4.4

The course covers: Creating and monitoring VMs in Prism Central; updating, deleting, exporting and cloning VMs; snapshots and recovery points; categories and affinity policies. Course labs: Exploring the VMs dashboard; creating VMs; creating a recovery point; cloning a VM; exporting a VM as an OVA.

What the bank actually tested

Five questions about placement and policy: where a VM runs, how to keep VMs apart or pinned, and how a policy reaches many VMs at once.

Facts to know cold

  • Categories attach policies to many VMs at once, and new VMs inherit the policy by getting the tag. Q41
  • Agent VMs stay on their host, the efficient answer for one firewall VM per node. Q33
  • Anti-affinity for SQL Server nodes: a VM-VM anti-affinity group created with aCLI. HA still applies. Q38
  • Flash Mode sets the tier preference to SSD. Q17
  • ADS (Acropolis Dynamic Scheduling) watches CPU and storage-controller contention over time and live-migrates VMs to relieve it. Q32

Trap: “VM labels”, “annotations” and protection policies appear as distractors for pinning a VM. None of them control placement.

Drill

Create two small VMs, put them in an anti-affinity group with aCLI, and watch where they land. Then hot-add a vCPU. Lab 6.

Documentation

M3 — Networking 4 questions

Key takeaways

  1. AHV networking is Open vSwitch: virtual switch vs0, bridge br0, uplink bond.
  2. Bond modes: Active-Backup (default, one active link), Active-Active with MAC pinning, Active-Active with LACP (IP + port hashing, needs switch LACP).
  3. A managed network with IPAM hands VMs addresses. Network segmentation isolates backplane traffic.

Also inToastNix 2.2·Cards 2.2

The course covers: AHV networking terminology; managed and unmanaged networks; monitoring cluster networks in Prism Central; the Network Visualizer in Prism Element. Course labs: Viewing network configuration in Prism Central; using the Network Visualizer.

What the bank actually tested

Four questions: one exhibit read (the visualizer showing one active uplink per host) and three definitions. Know the three bond modes by their balancing method.

Facts to know cold

  • Active-Backup: one uplink carries traffic, the rest stand by. It is the default and needs nothing from the switch. Q8
  • Active-Active with LACP balances on source/destination IP and TCP/UDP ports. Q31
  • IPAM: a managed network assigns VM IPs automatically. Q9
  • Network segmentation separates management from storage replication traffic. Q11

Trap: “Active-Passive” is not an AHV bond-mode name. The real names are Active-Backup, Active-Active with MAC pinning, and Active-Active (LACP).

Drill

Open the Network Visualizer, then run manage_ovs show_uplinks on a CVM and match the bond mode to what the visualizer shows. Lab 4.

Documentation

Tier 3 deep dive

M4 — Image Management 3 questions

Key takeaways

  1. Images come from a local file or a URL over HTTP.
  2. Image Placement Policies put images on clusters by matching categories.

Also inToastNix 2.1·Cards 2.1

The course covers: The image service; monitoring, uploading, importing and managing images in Prism Central. Course labs: Exploring the images dashboard; uploading and importing an image to Prism Central; uploading an image using Prism Element.

What the bank actually tested

Three short questions, two of them the same fact: categories drive image placement.

Facts to know cold

  • Image Placement Policies map images to target clusters through categories. Q7Q37
  • Remote images are pulled from a URL over HTTP. Q39

Trap: FTP and SMB appear as upload options. The image service takes a file upload or an HTTP(S) URL.

Drill

Upload one ISO from your workstation and one from a URL in Prism Element’s image configuration. Lab 5.

Documentation

M6 — Backup and Disaster Recovery Fundamentals 1 question

Key takeaways

  1. In Prism Central, VM snapshots are recovery points. Restore one in place to revert a VM, or clone from it.
  2. Prism Element’s older model is protection domains replicating to remote sites.

Also inToastNix 2.1 1.1·Cards 2.1 1.1

The course covers: Data protection strategies; snapshots and recovery points; the Data Protection dashboard; protection domains and remote sites; Nutanix Disaster Recovery terms. Course labs: Creating protection domains and a local VM restore; configuring remote sites; protection domains using remote sites; VM migration.

What the bank actually tested

One question. A whole course day for one exam point, but the blueprint tests snapshots under VM tasks (2.1), so don’t skip it entirely.

Facts to know cold

  • Manual in-place restore from Prism Central uses a recovery point. Q49

Trap: “Protection Policy” is the scheduled automation; the thing you restore from is the recovery point.

Drill

Snapshot a VM, change a file inside it, and restore in place. Lab 7.

Documentation

Blueprint cross-reference

The exam is written against the 14 blueprint objectives, not the course. Each row links to the objective’s notes in ToastNix, the modules that teach it, and the practice questions that tested it.

ObjectiveBlueprint wordingModulesPractice Qs
1.1Recognize Nutanix solutions, use cases, and features of Nutanix Cloud Infrastructure (NCI) technologiesM1, M2, M6Q2Q16Q27Q34Q42
1.2Recognize Nutanix solutions, use cases, and features of non-Nutanix Cloud Infrastructure (NCI) technologiesM1Q21Q50
1.3Recognize the use cases and features of Nutanix toolsM1Q35
2.1Describe VM tasksM4, M5, M6Q7Q17Q33Q37Q38Q39Q41Q49
2.2Identify virtual networking tasksM3Q8Q9Q11Q31
2.3Discuss storage operationsM2Q1Q12Q19Q20Q23Q28Q40
2.4Describe licensing tasksM8none
3.1Describe valid cluster optionsM1, M2, M7Q5Q6Q14Q24Q29Q30Q46
3.2Identify hardware maintenance tasksM2Q44
3.3Identify software maintenance tasksM8Q10Q22Q25Q26Q36Q43
4.1Perform and interpret a health checkM7Q13Q15Q47
4.2Review and interpret alerts and eventsM1, M7Q18Q45Q48
4.3Leverage support functionsM7Q4
4.4Review and interpret workload performanceM5, M7Q3Q32

Where the course and this bank run thin

Passing the practice bank is not the same as covering the blueprint. These objectives have one practice question or none, and the NHCF course gives them little or no time, but the real exam can still ask about them. Read their ToastNix notes and rate yourself on the blueprint checklist.

Objective 1.2 deserves the most attention of these: the real exam leans on product-to-use-case matching (Files, Objects, Volumes, NDB, NCM, NKP, Enterprise AI, EUC), and this bank only asks about two of them.

Three-week plan

Week 1 — Tier 1 (31 questions)

  • Day 1: rate yourself on the blueprint checklist so you have a baseline.
  • Days 2–3: M2 storage and resiliency. Lab 2 and Lab 3.
  • Day 4: M1 Prism Element vs Prism Central, Pulse, products. Lab 1.
  • Days 5–6: M7 monitoring. Lab 8.
  • Day 7: flashcards filtered to M1, M2 and M7 until nothing is missed.

Week 2 — Tier 2 and the gaps

Week 3 — close it out

  • Day 15: M4 and M6, with Lab 5 and Lab 7.
  • Days 16–18: one timed practice exam a day, then drill everything missed.
  • Days 19–20: What to study next tells you which modules still cost points. Go back to those labs.
  • Day 21: rest. Re-read the key takeaways boxes only.

Labs — make the cluster show you the answer

These run on the three-node lab cluster at 10.0.0.10. Each lab is built from specific practice questions, adapted from the NHCF course labs. At every step, predict first, then do it and open What you should see. If your cluster disagrees with this page, trust the cluster: note the AOS version and check the linked doc.

The nine labs cover 26 of the 50 questions. The other 24 are listed at the end, each with the reason it can’t be labbed.

Lab kit

  • The three-node lab cluster: Prism at the cluster virtual IP https://10.0.0.10:9440, CVMs on 10.0.0.12, .14 and .16, AHV hosts on .11, .13 and .15. No Data Services IP yet; you set one in Lab 2.
  • What it runs: Community Edition, AOS 6.8.1, AHV 20230302, 3 × 8 vCPU / 63 GB, all-flash on virtual disks, RF2, one 10 GbE NIC (eth0) per node. The exam is written for AOS 7.5, so a few screens may be named or placed differently; the concepts are the same.
  • No VM network exists yet. Do the IPAM step of Lab 4 first so your test VMs have somewhere to plug in.
  • A way to cut power to one node for Lab 3: the ESXi host client if the nodes are nested VMs, or IPMI / the power button on bare metal.
  • One small Linux ISO (Alpine or a netinst image) on your workstation for Lab 5, plus its HTTP download URL.
  • SSH to a CVM as nutanix for the aCLI, manage_ovs, ncc and logbay commands.
  • No Prism Central needed. The handful of questions that only make sense in Prism Central are listed at the end.

If your nodes are Community Edition or nested VMs, the hardware checks are fake, so expect NCC to complain about things a real node would not (IPMI, disk models). That’s fine: the point is learning where each answer lives.

Lab 1 — Two consoles, one cluster

ModuleM1·QuestionsQ2Q45Q48·Time20 min

Questions about reaching Prism and about Pulse are free points once you have clicked through them yourself.

Steps

  1. Open https://10.0.0.12:9440, then .14, .16 and the virtual IP .10.

    Predict: Do all four show the same thing?

    What you should see

    Yes. The same Prism Element, the same cluster name and the same VMs. Every CVM serves Prism; the virtual IP simply follows whichever CVM is the Prism leader. That is Q2.

  2. Now try an AHV host address, https://10.0.0.11:9440.

    Predict: Does it answer?

    What you should see

    No. Prism runs on the CVMs, not on the hypervisor host. That is the distractor in Q2.

  3. Gear icon → Pulse. Read what is collected and look for the setting that masks names before they are sent.

    Predict: Is Pulse on, and what does the masking option protect?

    What you should see

    CE asks about Pulse at first login. The masking option anonymises entity names and IP addresses: that is the data obfuscation in Q48. Q45’s answer, “disable only with Nutanix Support”, is why it defaults to on.

Lab 2 — Containers carry the policy

ModuleM2·QuestionsQ1Q12Q19Q20Q23Q40·Time30 min

Six questions ask where storage settings live or what they mean. Opening the dialogs answers all six.

Steps

  1. Storage → + Storage Container, name it lab-ctr, and open Advanced Settings.

    Predict: Which policies can you set here?

    What you should see

    Replication factor, compression (with its delay), deduplication and erasure coding: every storage policy is on the container. That is Q1 and Q40. On three nodes the RF choice is RF2; RF3 needs five (Q24).

  2. Look at the compression default, then at erasure coding.

    Predict: Which one is on by default, and does Prism let you enable erasure coding on three nodes?

    What you should see

    Inline compression is the recommended default for nearly every workload (Q23). On this cluster, NutanixManagementShare has inline compression (delay 0) while CE created default-container-… with compression off, so check the box on your new container. Erasure coding has a minimum node count; note exactly what Prism says on your three-node cluster before you trust any number in the docs (Q12).

  3. Open the storage pool’s details.

    Predict: Does the pool have its own RF or efficiency setting?

    What you should see

    No. The pool is just the physical disks and their capacity, which is why “storage pool” is the wrong answer in Q1.

  4. Gear icon → Cluster Details.

    Predict: Is there a Data Services IP? Set one to a free address on 10.0.0.0/24 (for example .17).

    What you should see

    Yours starts empty. The Data Services IP is the single iSCSI portal external clients use to reach Volumes (Q19); without it they would have to target individual CVMs.

Lab 3 — Fail a node on purpose

ModuleM2·QuestionsQ14Q29Q30·Time45 min

HA, fault tolerance and data resiliency are easier to remember once you have watched them happen.

Steps

  1. Create a small VM (1 vCPU, 1 GB) and note which host it runs on. Then open the Data Resiliency widget on Home.

    Predict: What does the widget say the cluster can tolerate?

    What you should see

    One node or disk failure: FT1, because the containers are RF2.

  2. Cut power to the node that hosts your test VM (not a shutdown: pull the plug). Nested: Power off in the ESXi host client. Bare metal: IPMI power off.

    Predict: What happens to the test VM, and how long does it take?

    What you should see

    Prism marks the host down, and HA restarts the VM on a surviving host after a few minutes. That is Q14 and Q29: there was spare capacity, so it came back.

  3. Look at Data Resiliency again while the node is still off.

    Predict: Could the cluster survive a second failure right now?

    What you should see

    No. With one node down and RF2, some data has only one copy left until the rebuild finishes. That is the point of Q30: FT1 tolerates one failure domain.

  4. Power the node back on and wait for its CVM to rejoin.

    Predict: Does the resiliency status recover on its own?

    What you should see

    Yes. Once the CVM is back and data is re-protected, the widget returns to normal. Nothing needs to be done by hand.

Lab 4 — Bonds, the visualizer, and IPAM

ModuleM3·QuestionsQ8Q9Q31·Time30 min

Three of the networking questions are recognisable on sight once you have read your own bond and built one IPAM network.

Steps

  1. SSH to a CVM and run manage_ovs show_uplinks.

    Predict: Which bond mode is the uplink in?

    What you should see

    Active-backup: the AHV default (Q8). On a nested node there is only one NIC in the bond, so it is the only possible active link.

  2. Open the Network Visualizer (Network in Prism Element).

    Predict: How many uplinks per host are drawn as carrying traffic?

    What you should see

    One per host. With active-backup and two or more NICs you would see one active link and the rest idle: exactly Q8’s exhibit. Active-active with LACP (Q31) would show both carrying traffic.

  3. Create a VLAN 0 network with IP address management on: network 10.10.10.0/24, gateway 10.10.10.1, pool .100–.150. Attach a test VM to it and boot it.

    Predict: Where does the VM’s address come from?

    What you should see

    From the pool, handed out by AHV itself. No DHCP server exists on that network. That is Q9.

Lab 5 — Two ways in to the image service

ModuleM4·QuestionsQ39·Time15 min

The image questions are all about where images come from and where they go.

Steps

  1. Gear icon → Image Configuration → Upload Image.

    Predict: Which sources does it accept?

    What you should see

    A file uploaded from your workstation, or a URL the cluster downloads from. That is Q39: a remote disk file comes in over HTTP.

  2. Upload your ISO both ways.

    Predict: Do both end up in the same list?

    What you should see

    Yes. In Prism Central, Image Placement Policies would then decide which clusters hold each image, by category (Q7, Q37).

Lab 6 — Keep VMs apart, keep VMs home

ModuleM5·QuestionsQ33Q38·Time30 min

Placement questions have specific answers: anti-affinity by aCLI, Agent VMs for per-host appliances.

Steps

  1. Create two small VMs, sql1 and sql2, then on a CVM:
    acli vm_group.create sqlpair
    acli vm_group.add_vms sqlpair vm_list=sql1,sql2
    acli vm_group.antiaffinity_set sqlpair
    Power both on.

    Predict: Where do they land?

    What you should see

    On different hosts, and HA still protects them. That is Q38.

  2. Update sql1 while it is running: add a vCPU and 1 GB of memory, then try to remove them again.

    Predict: Which changes apply live?

    What you should see

    Adding vCPU and memory works on a running AHV VM. Removing them needs the VM powered off.

  3. In the VM’s update dialog, look for the option to use it as an agent VM.

    Predict: What does it promise?

    What you should see

    An agent VM stays on its host and is powered off rather than migrated during maintenance: the right tool for one firewall VM per node (Q33). If your build hides the option, read the Managing a VM page linked from M5.

Lab 7 — Snapshot, break, restore

ModuleM6·QuestionsQ49·Time20 min

One question, but restoring a VM in place is a skill worth having before you need it.

Steps

  1. Take a snapshot of a test VM. Inside the guest, create a file.

    Predict: After restoring the snapshot, will the file still be there?

    What you should see

    No. Restoring reverts the VM in place to the snapshot’s state. Prism Central calls these snapshots recovery points, and that is Q49’s answer.

Lab 8 — Health, charts and logs

ModuleM7·QuestionsQ13Q15Q46Q47·Time40 min

Four monitoring questions come down to knowing which view shows what.

Steps

  1. On a CVM run ncc health_checks run_all. When it finishes, open the Health dashboard.

    Predict: Where do the failed checks show up?

    What you should see

    In Health, by entity. If Home’s heart has turned red, this is where you find out why (Q47). Nested CE will fail some hardware checks; that is expected here. A fresh CE also raises critical alerts for the default CVM and AHV host passwords; changing them is a worthwhile first fix.

  2. Analysis → New Metric Chart: storage-container logical usage, pick all your containers.

    Predict: One chart, several containers. Which chart type was that?

    What you should see

    A metric chart: one metric across several entities (Q15). Now make an entity chart for one VM with CPU and memory; that is the other type. Charting memory for several VMs over time is how you answer Q13.

  3. Gear icon → SMTP Server.

    Predict: What stops working if this is empty?

    What you should see

    Every email: alerts and NCC reports. Q46’s fix.

  4. On a CVM: logbay collect --duration=-1h.

    Predict: Where does the bundle go?

    What you should see

    Logbay prints the path of the zip it wrote. That bundle is what you attach to a support case.

Lab 9 — LCM: inventory first

ModuleM8·QuestionsQ10Q22Q25·Time30 min

The LCM questions are workflow questions. Running it once fixes the order in your head.

Steps

  1. LCM → Inventory → Perform Inventory. Watch the task list.

    Predict: What runs before the inventory itself?

    What you should see

    An LCM framework update, if a newer one exists. That is how you update LCM: run an inventory (Q25).

  2. Open LCM Settings.

    Predict: What are the alternatives to fetching from the internet?

    What you should see

    A local web server URL, or Direct Upload of bundles you downloaded elsewhere. That is Q22. On the web server, the framework bundle is extracted into release (Q10).

Questions with no lab

  • Q3 Runway is a Prism Central feature.
  • Q4 Discoveries live on the Nutanix support portal.
  • Q5 Needs Prism Central.
  • Q6 RBAC is a Prism Central feature.
  • Q7 Image Placement Policies need Prism Central.
  • Q11 Network segmentation needs multiple NICs per node; a nested node has one.
  • Q16 Definition.
  • Q17 Flash Mode needs SSD + HDD tiers; this cluster is all-flash.
  • Q18 Reports are a Prism Central feature.
  • Q21 Objects is a separate product.
  • Q24 Needs five nodes.
  • Q26 Redfish needs real BMC hardware.
  • Q27 Breaking CVM services on purpose is not worth the risk, even in a lab.
  • Q28 Configuring RF1 needs its prerequisites; read the page.
  • Q32 ADS needs real contention to act on.
  • Q34 Definition.
  • Q35 Needs a two-node cluster plus a witness.
  • Q36 The compatibility matrix is on the support portal.
  • Q37 Image Placement Policies need Prism Central.
  • Q41 Category-based security policy needs Prism Central (Flow).
  • Q42 Definition.
  • Q43 Needs an AOS upgrade; read the Q43 note instead.
  • Q44 Failing an SSD in a nested node does not behave like real hardware.
  • Q50 Volumes for clustering is design knowledge; Lab 2 shows its Data Services IP.

Timed practice exam

A mock exam from the full question bank: all 50 questions, 90 minutes, the real exam’s length and clock. Question order and answer order are shuffled every time, so you can’t pass by remembering that it was “B”. You get no feedback until you submit, and a blank counts as wrong. The real exam is scaled (3000 of 6000 to pass), so treat the 70% mark here as a target, not the official cut. Every attempt is saved to your account.

The exam needs the full questions. If they aren’t loaded yet, Start will ask you to sign in first.

What to study next

This builds itself from the questions you answer in flashcard mode, or mark on the cards below. It ranks the modules you get wrong most often, and gives you the module, its labs and the exact questions to go back to. Once you load the full questions, your answers are saved to your account. Before that, they stay in this browser.

Question index — all 50, with the documentation that settles them

Each entry gives the question in one line, the keyed answer, and why that answer is right, in my own words, with the Nutanix page that settles it. Press Load full questions to swap in the real question text, options and exhibits. That bank is private and needs the site password.

Q1 M2 Lab 2

Where replication factor and storage-efficiency policies are applied in Prism Element.

Answer: A

On the storage container. Every vDisk in a container inherits its RF, compression, deduplication and erasure-coding settings, which is why moving a vDisk between containers is how you change them for one VM. Storage Container Management

Q2 M1 Lab 1

Which IP address reaches Prism Element directly.

Answer: B

Every CVM serves Prism Element, so the IP of any CVM works, as does the cluster virtual IP. The AHV host, the Foundation VM and Prism Central are different things. Logging into the Prism Element Web Console

Q3 M7

Where the cluster runway forecast lives.

Answer: C

Runway is an NCM Intelligent Operations feature on the Prism Central dashboard. Prism Element manages one cluster and has no runway view. Nutanix Cloud Manager (NCM) Intelligent Operations Overview

Q4 M7

What Discoveries on the Nutanix support portal are for.

Answer: A

Insights matches Pulse data against known issues and flags the clusters that are exposed, before you hit the bug. Nutanix Insights - Pulse Health Monitoring

Q5 M1

How to open a registered cluster from Prism Central.

Answer: B

Prism Central’s cluster quick-access widget launches that cluster’s Prism Element in context. Registration is what makes the cluster appear there. Register a Cluster with Prism Central

Q6 M1

Where role-based access control is configured.

Answer: D

RBAC is a Prism Central feature: roles are assigned to users or groups and scoped to clusters or categories. Security and User Management

Q7 M4

The Prism Central feature that maps images to target clusters using categories.

Answer: B

Image Placement Policies decide which clusters hold an image, by matching image categories to cluster categories. Managing Categories in the Categories Tab

Q8 M3 Lab 4

Reading host uplinks in a Network Visualizer exhibit.

Answer: B

One link per host carries traffic and the others are idle standbys: that is Active-Backup, the AHV default bond mode. Bond Types

Q9 M3 Lab 4

The network type that hands VMs IP addresses automatically.

Answer: C

On an AHV network with IPAM enabled, AHV answers the VM’s DHCP request itself from the pool you defined. IP Address Management

Q10 M8 Lab 9

Where to extract the LCM framework bundle on a dark-site web server.

Answer: A

Into the release directory that LCM’s dark-site URL points at. LCM looks for its framework and manifest there. LCM Framework Update using Dark Site Method

Q11 M3

Securing traffic between management and storage replication.

Answer: B

Network segmentation moves CVM backplane (replication) traffic onto its own VLAN or interfaces, apart from management. Network Segmentation

Q12 M2 Lab 2

The efficiency feature that replaces traditional RF copies for suitable data.

Answer: C

Erasure coding stores parity instead of full copies, for write-cold data, which saves capacity while keeping the same failure tolerance. Prism Element - Erasure Coding

Q13 M7 Lab 8

Checking whether memory load has historically been even across an app’s VMs.

Answer: C

Only Analysis charts show history per VM side by side. An alert policy or a filtered VM list shows you the present, not the trend. Adding a Chart

Q14 M2 Lab 3

What the cluster does when a node fails at about 50% utilisation.

Answer: D

AHV HA restarts the HA-protected VMs on the surviving nodes. At 50% load there is room for them, so nothing is left off. Cluster Fault Tolerance

Q15 M7 Lab 8

One chart showing logical usage for three storage containers.

Answer: A

A metric chart plots one metric across several entities. An entity chart is the reverse: several metrics for one entity. Adding a Chart

Q16 M2

The scale-out storage technology behind Nutanix HCI.

Answer: B

The Distributed Storage Fabric pools every node’s local disks into one storage layer served by the CVMs. Introduction to AOS

Q17 M5

What enabling Flash Mode does.

Answer: B

It sets the storage-tier preference to SSD for a VM or vDisk, so its data stays on flash in a hybrid cluster. Managing a VM (AHV)

Q18 M7

Sending weekly VM performance reviews to business managers.

Answer: D

Prism Central reports can be scheduled and emailed. Analysis charts and alerts are not a distribution mechanism. Creating a Custom Report Configuration

Q19 M2 Lab 2

The address external clients use to reach Volumes storage.

Answer: C

The Data Services IP is the cluster-wide iSCSI portal. Clients discover their volume groups through it, and the cluster redirects them to a CVM. Volume Group Configuration

Q20 M2 Lab 2

What Replication Factor 2 refers to.

Answer: D

The number of copies of data written in the cluster. RF2 keeps two, each on a different node. Replication Factor 2

Q21 M1

Storage service for petabytes of unstructured data with S3 APIs.

Answer: D

Objects is S3-compatible object storage. Files is SMB/NFS; Volumes is iSCSI block. Nutanix Objects Overview

Q22 M8 Lab 9

The LCM feature that simplifies upgrades on clusters without internet access.

Answer: C

Direct Upload lets you push downloaded bundles straight into LCM, without standing up a local web server. LCM Framework Update using Dark Site Method

Q23 M2 Lab 2

The storage-efficiency feature suitable for nearly every workload.

Answer: C

Compression. Inline compression is cheap on modern CPUs and helps almost everything; dedup and EC only pay off for specific data. Prism Element - Compression

Q24 M2

Minimum cluster size for redundancy factor 3.

Answer: C

Five nodes. Surviving two failures needs enough members left for the metadata quorum and three-copy placement. Replication Factor 3

Q25 M8 Lab 9

How to upgrade the LCM framework to the latest version.

Answer: C

Run an inventory. Inventory checks for a newer framework and updates LCM itself before it inventories anything else. Performing Inventory with the Life Cycle Manager from Prism Element

Q26 M8

The biggest benefit of Redfish with LCM.

Answer: C

BMC and BIOS updates finish about twice as fast, because the Redfish path needs fewer reboots than the older method. Life Cycle Manager (LCM) Overview

Q27 M2

What the cluster does about repeated Stargate and Cassandra failures on one node.

Answer: B

It redirects that node’s I/O path to another CVM (autopathing), so guest VMs keep their storage while the CVM is unhealthy. Introduction to AOS

Q28 M2

What to check before configuring Replication Factor 1.

Answer: D

The node count, along with RF1’s other prerequisites. RF1 keeps a single copy, so it is only for data you can afford to lose. Replication Factor 1

Q29 M2 Lab 3

A host in a four-node AHV cluster loses all networking.

Answer: C

HA treats it as a failed host and restarts its VMs on the other three, because there is enough spare capacity. Cluster Fault Tolerance

Q30 M2 Lab 3

How many failures an FT1 / RF2 cluster tolerates across domains (disk-diagram exhibit).

Answer: A

One. RF2 keeps two copies, so a second failure in a different node, block or rack can take the only remaining copy of some data. One Node or One Disk Cluster Fault Tolerance

Q31 M3 Lab 4

NIC teaming that balances on source/destination IP and TCP/UDP ports.

Answer: B

Active-Active with LACP (balance-tcp) hashes on L3 and L4 headers. It needs LACP on the switch. MAC pinning balances by VM MAC instead. Bond Types

Q32 M5

The AHV feature that watches for compute and storage I/O hotspots over time.

Answer: B

ADS (Acropolis Dynamic Scheduling) detects CPU and storage-controller contention and live-migrates VMs to relieve it. AHV Overview

Q33 M5 Lab 6

Keeping a per-host firewall VM on its host, most efficiently.

Answer: D

Mark it as an Agent VM. Agent VMs stay on their host, are not migrated, and are powered off for maintenance. Managing a VM (AHV)

Q34 M2

What is stored as a file on CVM-owned storage devices.

Answer: C

The extent group. Extents (logically contiguous data) are grouped into extent groups, and each group is a file on a CVM-owned disk. Storage Components

Q35 M1

What a two-node ROBO cluster needs to stay available through a node failure.

Answer: A

A Witness VM at a third site arbitrates which node keeps serving, so the pair cannot split-brain. Witness VM for Two-Node Clusters

Q36 M8

The resource for a safe AOS and hypervisor upgrade on vSphere.

Answer: C

The Compatibility and Interoperability Matrix lists which AOS, hypervisor and firmware versions are supported together. Determining Compatibility Between Hardware and Supported Products

Q37 M4

What Image Placement Policies use to target clusters.

Answer: D

Categories on the clusters, matched against categories on the images. Managing Categories in the Categories Tab

Q38 M5 Lab 6

Keeping SQL Server cluster VMs on different hosts while keeping HA.

Answer: C

A VM-VM anti-affinity rule, created with aCLI (vm_group). HA still restarts the VMs after a failure. AHV Overview

Q39 M4 Lab 5

How to upload a remote disk file to the image service.

Answer: A

Give the image service a URL over HTTP. The alternative is uploading a file from your workstation. Creating a VM (AHV)

Q40 M2 Lab 2

The entity on which replication factor is configured.

Answer: D

The storage container, the same answer as Q1 asked a different way. Replication Factor Configuration

Q41 M5

Applying one security policy to dozens of VMs efficiently.

Answer: B

Tag the VMs with a category and attach that category to the policy. New VMs join by getting the tag. Managing Categories in the Categories Tab

Q42 M1

The technology that lets applications and data move freely between environments.

Answer: C

The App Mobility Fabric, Nutanix’s name for moving workloads between hypervisors and clouds. Introduction to AOS

Q43 M8

What happens to VMs during an AOS upgrade on vSphere without automatic live migration.

Answer: D

Disputed key. An AOS upgrade restarts the CVMs one at a time, not the hosts. Guest VMs stay on their host while the other CVMs serve their I/O, so B (“continue to run on the same host”) is the defensible reading. The bank keys D. Hosts only need emptying for a hypervisor upgrade. Life Cycle Manager (LCM) Overview

Q44 M2

What happens when an SSD fails in a hybrid AHV node.

Answer: D

The bank keys a reboot of that node’s CVM; its I/O is served by other CVMs meanwhile. Check the Data Drive Failure page for how your AOS release handles a metadata SSD. Data Drive Failure

Q45 M1 Lab 1

When Pulse should be disabled.

Answer: D

Only under the guidance of Nutanix Support. Pulse feeds Insights, proactive support and Discoveries. Pulse Health Monitoring

Q46 M7 Lab 8

NCC alert emails missing after a cluster expansion.

Answer: B

Configure SMTP. Without a working SMTP server there is no email path for alerts or NCC reports. Configuring an SMTP Server

Q47 M7 Lab 8

Which dashboard isolates the cause of a red heart in Prism Element.

Answer: A

The Health dashboard lists every failing check by entity. The heart on Home is only the summary. Verify the Cluster Health

Q48 M1 Lab 1

The Pulse feature that protects a customer’s private information.

Answer: D

Data obfuscation masks entity names and IP addresses before telemetry leaves the cluster. Pulse Health Monitoring

Q49 M6 Lab 7

A manual in-place restore of a mission-critical VM from Prism Central.

Answer: D

Restore from a recovery point. Recovery points are Prism Central’s snapshots, and they can revert the VM in place or clone a new one. Creating a VM Snapshot Manually

Q50 M1

The best fit for deploying a Microsoft SQL cluster on Nutanix.

Answer: A

Volumes: shared iSCSI block storage that clustered Windows and SQL nodes can all attach to. Volume Group Configuration

Dictionary — the words behind the answers

Every term below is marked in the text above with a dotted underline. Click one anywhere on the page and its definition opens in place, so you never lose your spot. Each entry gives the one-line meaning first and then how it actually works.

These definitions are written from the behaviour the question bank tests and the Nutanix documentation linked on each entry. Where a number or a default matters, check it against your AOS release.

AOS

The Nutanix operating system that runs in every CVM and turns the nodes into one cluster.

AOS provides the Distributed Storage Fabric, the cluster services and Prism Element. It is upgraded independently of the hypervisor, as a rolling restart of the CVMs.

See also: Controller VM (CVM) · Distributed Storage Fabric · Prism Element

Nutanix documentation →

AHV

Nutanix’s own hypervisor, built on KVM and included with AOS.

AHV hosts run the guest VMs and the CVM. Several features (ADS, Agent VMs, Image Placement, Flow) exist only on AHV, which is a frequent distractor on ESXi questions.

See also: Controller VM (CVM) · ADS · Open vSwitch (vs0, br0)

Nutanix documentation →

Controller VM (CVM)

The VM on every node that owns its local disks and serves storage I/O.

Each CVM runs the AOS services: Stargate (data I/O), Cassandra (metadata), Curator (background tasks), Zookeeper (configuration) and Prism. Prism Element is reachable on any CVM’s IP. If a CVM goes down, autopathing sends its node’s I/O to another CVM.

See also: Stargate · Cassandra · Autopathing · Prism Element

Nutanix documentation →

Distributed Storage Fabric

The scale-out storage layer that pools every node’s local disks.

The CVMs present one shared pool to every host. Writes are replicated to other nodes according to RF, and data locality keeps a VM’s reads on its own node.

See also: Replication factor (RF) · Data locality · Extent group

Nutanix documentation →

Stargate

The CVM service that handles data I/O.

Stargate receives reads and writes from the hypervisor (NFS, iSCSI or SMB internally) and writes the replicas. Repeated Stargate failures on a node trigger autopathing.

See also: Controller VM (CVM) · Cassandra · Autopathing

Nutanix documentation →

Cassandra

The distributed metadata store inside the CVMs.

Cassandra tracks where every extent lives. It needs a quorum of CVMs, which is part of why higher fault-tolerance levels need more nodes.

See also: Controller VM (CVM) · Stargate · Fault tolerance / redundancy factor

Nutanix documentation →

Autopathing

Redirecting a node’s storage I/O to another CVM when its own CVM is unhealthy.

The host’s storage path is pointed at a healthy remote CVM, so guest VMs keep running without a restart. When the local CVM recovers, I/O moves back.

See also: Controller VM (CVM) · Stargate

Nutanix documentation →

Prism Element

The web console for one cluster, served by its CVMs.

Reach it on https://<any CVM or the virtual IP>:9440. It covers the cluster’s own VMs, storage, network, health, NCC and LCM.

See also: Prism Central · Controller VM (CVM)

Nutanix documentation →

Prism Central

A separate VM that manages many clusters from one console.

Clusters are registered to it. It owns the cross-cluster features: RBAC, categories and the policies built on them, reports, runway, Intelligent Operations and Image Placement Policies.

See also: Prism Element · Categories · Runway · Role-based access control

Nutanix documentation →

Role-based access control

Granting users roles scoped to specific clusters or categories.

Configured in Prism Central. A role bundles permissions; an authorisation policy binds a role to users and to a scope.

See also: Prism Central · Categories

Nutanix documentation →

Pulse

Telemetry the cluster sends to Nutanix for proactive support.

Pulse feeds Insights, Discoveries and support cases. It is on by default; disable it only under Nutanix Support’s guidance. Data obfuscation masks names and IPs first.

See also: Insights / Discoveries · Data obfuscation

Nutanix documentation →

Data obfuscation

Masking entity names and IP addresses in Pulse data.

Protects customer-identifying information while still letting Nutanix spot issues by pattern.

See also: Pulse

Nutanix documentation →

Insights / Discoveries

Nutanix’s analysis of Pulse data on the support portal.

Discoveries flag clusters exposed to known issues before they hit them, and support can open cases proactively.

See also: Pulse

Nutanix documentation →

Replication factor (RF)

How many copies of each piece of data the cluster keeps.

RF2 keeps two copies on different nodes, RF3 three. RF is a container setting. RF1 (one copy) exists for disposable data and has prerequisites.

See also: Fault tolerance / redundancy factor · Storage container · Erasure coding (EC-X)

Nutanix documentation →

Fault tolerance / redundancy factor

How many simultaneous failures the cluster survives.

FT1 survives one node or disk failure and pairs with RF2. FT2 survives two, pairs with RF3, and needs at least five nodes. The Data Resiliency widget shows the current level.

See also: Replication factor (RF) · Cassandra

Nutanix documentation →

Storage pool

The group of physical disks the cluster stores data on.

Normally one per cluster. It carries capacity, not policy: RF and efficiency settings belong to containers.

See also: Storage container

Nutanix documentation →

Storage container

A logical slice of the storage pool that carries the storage policies.

RF, compression, deduplication and erasure coding are all set here, and every vDisk inside inherits them. Live vDisk migration moves a disk between containers.

See also: Storage pool · Replication factor (RF) · Compression · Erasure coding (EC-X) · Deduplication

Nutanix documentation →

Extent group

The unit stored as a file on a CVM-owned disk.

Data is written as extents (logically contiguous chunks of a vDisk), which are packed into extent groups; each extent group is a file on a physical disk the CVM owns.

See also: Distributed Storage Fabric · Storage container

Nutanix documentation →

Compression

Shrinking data as it is written (inline) or later (post-process).

Cheap on modern CPUs and helpful for nearly every workload, which makes it the safe default efficiency setting.

See also: Deduplication · Erasure coding (EC-X) · Storage container

Nutanix documentation →

Deduplication

Storing identical blocks once.

Pays off where many VMs share the same data, such as full clones and VDI. Elsewhere it costs metadata and memory for little gain.

See also: Compression · Erasure coding (EC-X)

Nutanix documentation →

Erasure coding (EC-X)

Replacing full replica copies with parity for cold data.

Data that is written once and rarely rewritten is re-protected as data plus parity strips across nodes, saving capacity at the same tolerance. It needs a minimum node count.

See also: Replication factor (RF) · Compression

Nutanix documentation →

Flash Mode

Pinning a VM’s or vDisk’s data to the SSD tier.

On hybrid nodes, it keeps latency-sensitive data on flash instead of letting it age down to HDD.

See also: Storage container

Nutanix documentation →

Data locality

Keeping a VM’s data on the node it runs on.

Reads are served locally; the replica goes to another node. When a VM moves, its data follows over time.

See also: Distributed Storage Fabric

Nutanix documentation →

Volumes (volume groups)

iSCSI block storage presented to VMs or physical hosts.

Shared disks for clustered applications such as Microsoft SQL and Windows failover clusters. External clients connect through the Data Services IP.

See also: Data Services IP · Objects · Files

Nutanix documentation →

Data Services IP

The cluster-wide iSCSI portal address.

iSCSI initiators discover targets through it and are redirected to a CVM, so the address stays the same whichever CVM is serving.

See also: Volumes (volume groups)

Nutanix documentation →

Objects

S3-compatible object storage.

For petabyte-scale unstructured data: backups, archives, data lakes. Files is SMB/NFS; Volumes is block.

See also: Volumes (volume groups) · Files

Nutanix documentation →

Files

SMB and NFS file shares served by file-server VMs.

Scale-out NAS on the cluster, for home directories and departmental shares.

See also: Objects · Volumes (volume groups)

Nutanix documentation →

Open vSwitch (vs0, br0)

The virtual switching layer inside every AHV host.

The default virtual switch vs0 wraps bridge br0 and its uplink bond. Configure it cluster-wide from Prism so every host matches.

See also: Bond modes · IPAM

Nutanix documentation →

Bond modes

How an AHV host spreads traffic over its uplinks.

Active-Backup (default): one link carries traffic, the others stand by. Active-Active with MAC pinning (balance-slb): VMs spread across links by MAC, no switch config. Active-Active with LACP (balance-tcp): hashes on IP and TCP/UDP ports and needs LACP on the switch.

See also: Open vSwitch (vs0, br0) · Network Visualizer

Nutanix documentation →

IPAM

AHV assigning VM addresses itself on a managed network.

When enabled on a network, AHV intercepts the VM’s DHCP request and answers from the pool you defined. No external DHCP server is needed.

See also: Open vSwitch (vs0, br0)

Nutanix documentation →

Network segmentation

Separating cluster traffic types onto their own VLANs or interfaces.

Moves CVM backplane (replication) traffic away from management, and can isolate services such as Volumes or DR.

See also: Open vSwitch (vs0, br0)

Nutanix documentation →

Network Visualizer

Prism Element’s map of hosts, uplinks, VMs and switch ports.

Uses LLDP/CDP and SNMP to draw the physical connections. In Active-Backup you can see one active uplink per host.

See also: Bond modes

Nutanix documentation →

Categories

Key:value tags that policies target instead of individual VMs.

Security, protection, Image Placement and affinity policies all point at categories. Tag a new VM and it joins every policy bound to that category.

See also: Prism Central · Image Placement Policy

Nutanix documentation →

Image Placement Policy

Rules for which clusters hold which images.

A Prism Central policy that matches image categories to cluster categories.

See also: Categories · Prism Central

Nutanix documentation →

Agent VM

A VM tied to its host, such as a per-node firewall or antivirus appliance.

Agent VMs are not migrated: they stay on their host and are powered off during host maintenance.

See also: Affinity and anti-affinity

Nutanix documentation →

Affinity and anti-affinity

Rules that keep VMs on certain hosts, or apart from each other.

VM-host affinity is set in Prism. VM-VM anti-affinity, for example for clustered SQL nodes, is created with aCLI vm_group commands.

See also: Agent VM · VM high availability

Nutanix documentation →

ADS

Acropolis Dynamic Scheduling: automatic hotspot relief on AHV.

Watches CPU and storage-controller contention over time and live-migrates VMs to balance the hosts.

See also: VM high availability · Affinity and anti-affinity

Nutanix documentation →

VM high availability

Restarting a failed host’s VMs on the surviving hosts.

On AHV, HA-protected VMs restart elsewhere when a host fails or loses all connectivity, as long as there is spare capacity.

See also: Fault tolerance / redundancy factor · ADS

Nutanix documentation →

Recovery point

Prism Central’s name for a VM snapshot.

Restore one in place to revert the VM, or clone a new VM from it. Protection policies create them on a schedule.

See also: Protection domain

Nutanix documentation →

Protection domain

Prism Element’s grouping of VMs for scheduled snapshots and replication.

Protection domains replicate to remote sites. In Prism Central the equivalent model is protection policies and recovery plans.

See also: Recovery point

Nutanix documentation →

Witness VM

A tie-breaker at a third site for two-node clusters and Metro Availability.

Without it a two-node pair can’t tell a dead partner from a broken link, so it can’t keep serving safely after a node failure.

See also: VM high availability · Fault tolerance / redundancy factor

Nutanix documentation →

Life Cycle Manager (LCM)

The framework that upgrades firmware and software across the cluster.

Workflow: inventory, pick updates, pre-checks, then a rolling update. Inventory updates the LCM framework itself first.

See also: Dark site · Redfish · Compatibility and Interoperability Matrix

Nutanix documentation →

Dark site

A cluster with no internet access to Nutanix.

LCM then uses a local web server (framework bundle extracted into release) or Direct Upload of bundles you downloaded elsewhere.

See also: Life Cycle Manager (LCM)

Nutanix documentation →

Redfish

A standard BMC management API that LCM uses for firmware updates.

On Redfish-capable hardware, BMC and BIOS updates finish about twice as fast because they need fewer reboots.

See also: Life Cycle Manager (LCM)

Nutanix documentation →

Compatibility and Interoperability Matrix

The support-portal list of which versions work together.

Check it before any AOS, hypervisor, Prism Central or firmware upgrade.

See also: Life Cycle Manager (LCM)

Nutanix documentation →

NCC

Nutanix Cluster Check, the health-check framework.

Runs hundreds of checks from Prism or with ncc health_checks run_all. Failures appear on the Health dashboard; results can be emailed if SMTP is set.

See also: Logbay

Nutanix documentation →

Logbay

The log-collection tool on the CVMs.

logbay collect gathers logs for a time window into one bundle to attach to a support case.

See also: NCC

Nutanix documentation →

Metric chart vs entity chart

The two Analysis chart types.

A metric chart plots one metric across several entities. An entity chart plots several metrics for one entity.

See also: NCC

Nutanix documentation →

Runway

Prism Central’s forecast of how long capacity lasts.

An Intelligent Operations feature on the Prism Central dashboard. It projects CPU, memory and storage growth to the day they run out.

See also: Prism Central

Nutanix documentation →