NCP Monitoring, Maintenance, and Troubleshooting 4 — Questions and Answers
Question 1: When using Prism Element to monitor cluster storage capacity, which metric indicates the usable space after accounting for replication factor and erasure coding overhead?
- Raw Capacity
- Logical Capacity
- Effective Capacity (Correct answer)
- Physical Used
Correct answer: Effective Capacity
Effective Capacity reflects the actual usable storage after replication factor and erasure coding overheads are applied.
Question 2: An AHV cluster experiences a split-brain scenario. Which Nutanix component is responsible for maintaining quorum and preventing data inconsistency?
- Stargate
- Zookeeper (Correct answer)
- Cerebro
- Acropolis
Correct answer: Zookeeper
Zookeeper maintains distributed coordination and cluster quorum on Nutanix, preventing split-brain data inconsistency.
Question 3: Which report type in Prism Central provides a historical trend of cluster-wide CPU and memory utilization for capacity planning?
- Infrastructure Report
- Efficiency Report
- Capacity Planning Report (Correct answer)
- Compliance Report
Correct answer: Capacity Planning Report
The Capacity Planning Report in Prism Central provides historical utilization trends to forecast future infrastructure needs.
Question 4: After enabling Nutanix Volume Groups for external iSCSI access, an external initiator cannot discover targets. What should be checked first?
- iSCSI CHAP authentication settings on the Volume Group
- Data Services IP configuration on the cluster (Correct answer)
- CVM memory allocation for iSCSI
- Hypervisor iSCSI kernel module status
Correct answer: Data Services IP configuration on the cluster
The Data Services IP is the cluster-wide iSCSI target address; if not configured, external initiators cannot discover Nutanix Volume Group targets.
Question 5: A VM protected by Nutanix Leap (DR) fails to fail over to the recovery site. Which log file on Prism Central should be reviewed first?
- /home/nutanix/data/logs/cerebro.INFO (Correct answer)
- /home/nutanix/data/logs/prism_central.log
- /home/nutanix/data/logs/uhura.INFO
- /home/nutanix/data/logs/aplos.out
Correct answer: /home/nutanix/data/logs/cerebro.INFO
Cerebro is the Nutanix data protection and replication service; its logs are the first place to investigate DR failover failures.
Question 6: What does the Nutanix 'Reclaimable Space' metric in Prism represent?
- Raw disk space on failed drives
- Space that can be freed by deleting powered-off VM snapshots (Correct answer)
- Capacity freed by enabling deduplication
- Storage reserved for future nodes
Correct answer: Space that can be freed by deleting powered-off VM snapshots
Reclaimable Space indicates storage capacity that can be recovered by removing stale or unnecessary snapshots from powered-off VMs.
Question 7: Which maintenance mode behavior is specific to Nutanix AHV when a node enters maintenance mode?
- VMs are powered off and must be manually migrated
- AHV live-migrates all VMs off the node automatically before maintenance begins (Correct answer)
- Storage replication is suspended for the node
- CVM services are stopped but VMs remain running
Correct answer: AHV live-migrates all VMs off the node automatically before maintenance begins
When a node enters maintenance mode on AHV, Nutanix automatically live-migrates all running VMs off that node before applying any maintenance actions.
NCP Monitoring, Maintenance, and Troubleshooting 4
When using Prism Element to monitor cluster storage capacity, which metric indicates the usable space after accounting for replication factor and erasure coding overhead?