Nutanix Certified Master – Multicloud Infrastructure (NCM-MCI) — Question 11

An administrator is deploying an application using Nutanix Volumes. After configuring the volume group and connecting the guest's iSCSI initiator to the volume group, they begin performance testing. The administrator learns that performance on the virtual disk attached to the iSCSI initiator is far less than that of a virtual disk connected directly to the VM.
Which situation is causing this condition?

Answer options

• A. The VM's iSCSI traffic is being routed to the data services IP subnet
• B. The performance test is generating small block random 10
• C. The duster data services IP address is a bottleneck, shared with other iSCSI traffic
• D. Data Locality ensures that VM attached disks are always faster than iSCSI volumes

Correct answer: C

Explanation

The correct answer is C because when the cluster data services IP is a bottleneck, it can lead to reduced performance for iSCSI traffic due to congestion. Option A is incorrect as routing traffic to the data services subnet does not inherently cause performance loss. Option B is not the main issue, as the performance test specifics do not directly relate to the iSCSI performance. Option D is misleading since Data Locality does not apply to iSCSI volumes in the same way as directly attached disks.