An administrator is concerned that a VM on a hybrid cluster with 8GB RAM and 4 vCPUs is performing poorly. An analysis of the VM indicates that CPU utilization is at 50%. Memory utilization is at 30%.

The correct answer is D. Enable Flash Mode. The VM's performance metrics show that CPU (50%) and memory (30%) utilization are well within acceptable limits, so adding vCPUs or RAM would not address the bottleneck. The key indicator is disk latency at 18ms, which is high and suggests the VM's vDisk is being served from spin

Health and Troubleshooting

Question

An administrator is concerned that a VM on a hybrid cluster with 8GB RAM and 4 vCPUs is performing poorly. An analysis of the VM indicates that CPU utilization is at 50%. Memory utilization is at 30%. and disk latency is at 18ms. What can the administrator do to improve performance?

Options

AAdd2xvCPU
BAdd 4GB RAM
CIncrease vDisksize
DEnable Flash Mode

How the community answered

(50 responses)

A
6% (3)
B
2% (1)
C
14% (7)
D
78% (39)

Explanation

The VM's performance metrics show that CPU (50%) and memory (30%) utilization are well within acceptable limits, so adding vCPUs or RAM would not address the bottleneck. The key indicator is disk latency at 18ms, which is high and suggests the VM's vDisk is being served from spinning disk (HDD) on the hybrid cluster rather than flash storage. Enabling Flash Mode in Nutanix pins the vDisk data entirely to the SSD tier, eliminating HDD read latency and dramatically reducing disk I/O latency. This is the targeted fix for a disk latency problem on a hybrid (SSD + HDD) cluster.

Topics

#VM Performance#Disk Latency#Hybrid Storage#Flash Mode

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