NCA-GENL flashcards
NCA-GENL · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Controller VM
- A virtual machine running on each Nutanix node that owns the local disks and serves storage I/O to the hypervisor and to other CVMs in the cluster.
- Distributed Storage Fabric
- The AOS layer that pools local disks from all nodes into one logical datastore, presenting it to hypervisors as NFS, SMB, or iSCSI storage.
- Replication Factor
- The number of copies of each data extent kept in the cluster; RF2 tolerates one failure and RF3 tolerates two simultaneous disk or node failures.
- OpLog
- A per-CVM persistent write buffer that absorbs random writes and coalesces them into sequential extent writes, reducing read-modify-write overhead on disk.
- Prism Element
- The per-cluster management interface showing health, alerts, VMs, storage capacity, and performance for a single Nutanix cluster.
- Prism Central
- A separate VM appliance that manages many clusters, adding categories, projects, self-service, and policy-based protection across the environment.
- Categories
- Key-value labels in Prism Central used to group VMs and other objects for policy application, RBAC scoping, and self-service project assignment.
- Protection Domain
- A grouping of VMs and consistency groups with an associated snapshot and replication schedule, retention policy, and optional remote target.
- NearSync replication
- A Nutanix replication mode providing RPO measured in seconds to minutes, requiring low-latency links between sites and a witness for quorum.
- Metro Availability
- A stretched-cluster configuration using synchronous replication across two sites with a witness, delivering zero RPO but requiring low-latency links.
- Nutanix Leap
- A disaster-recovery orchestration service in Prism Central offering runbooks, one-click failover and failback, and non-disruptive DR testing.
- Nutanix Mine
- An integrated backup service that copies Nutanix snapshots to object storage targets such as S3-compatible or NFS repositories for long-term retention.
- Erasure Coding
- A capacity-saving scheme that stores parity stripes instead of full replicas for cold data, improving efficiency but increasing rebuild cost and latency.
- Nutanix Volumes
- A block-storage service exposing iSCSI targets to external hosts that are not part of the AHV or ESXi cluster, supporting bare-metal and legacy workloads.
- Nutanix Files
- A scale-out SMB and NFS file service delivered by dedicated File Server VMs running on the AOS cluster.
- Open vSwitch
- The virtual switch used by AHV on each host, providing bridging and VLAN tagging for VM and management traffic.
- AHV live migration
- The AHV feature that moves a running VM between hosts without downtime, subject to CPU compatibility and shared storage availability.
- Nutanix Guest Tools
- An in-guest package installing drivers and agents that enable VSS snapshots, self-service restore, and file-level restore for AHV VMs.
- Balance-SLB bonding
- An AHV bond mode that distributes VM traffic across physical links by source MAC hash without requiring switch-side link aggregation configuration.
- Nutanix Calm
- An application lifecycle management service using blueprints to deploy, scale, and delete multi-tier applications across AHV, ESXi, and public clouds.
- Nutanix Move
- A migration tool that moves VMs from ESXi, Hyper-V, AWS, or Azure into AHV or NC2, supporting online migration with minimal downtime.
- Nutanix Cloud Clusters
- A service running the native AOS and AHV stack on AWS or Azure infrastructure, enabling live migration between on-premises and public cloud.
- Prism v3 API
- The current REST API generation for Prism, using intent-based specifications to automate cluster, VM, and policy operations.
- Life Cycle Manager
- A Prism Central feature that manages AOS, AHV, firmware, and NCC updates across clusters with pre-checks and rolling upgrades.
- Nutanix Cluster Check
- A health-check framework run before upgrades and after configuration changes to detect known issues and configuration drift.
- Pulse
- A telemetry service that sends cluster health and configuration data to Nutanix for proactive support and analytics.
- Self-encrypting drives
- Drives that perform hardware-based data-at-rest encryption, an alternative to software encryption for protecting data on Nutanix clusters.
- Genesis
- The bootstrap service that forms a Nutanix cluster from individual nodes during imaging and foundation.
- Stargate
- The data I/O service running on each CVM that handles read and write requests from the hypervisor and from remote CVMs.
- Nutanix licensing tiers
- Starter, Pro, and Ultimate editions that govern feature access such as encryption, async replication, and multi-cluster Prism Central management.
- Cluster minimum size
- A production Nutanix cluster requires at least three nodes for resiliency; single-node clusters are limited to edge and ROBO use cases.
- Storage QoS
- A policy limiting IOPS per VM or per container to prevent noisy-neighbor effects on shared Nutanix clusters.