VMware vSphere 7.x Professional (VCP-DCV 2021) — Question 57

An application owner complains about poor performance on a VM named APPVM01. Troubleshooting indicates that another VM named DBVM01 on the same datastore is saturating the volume with I/O requests.
Which two actions can be taken to reduce DBVM01 impact on APPVM01, while still prioritizing DBVM01 disk I/O? (Choose two.)

Answer options

• A. Configure APPVM01 with a shares limit of Low, and DBVM01 with a shares limit of Normal
• B. Enable Network I/O Control on the cluster containing APPM01 and DBVM01
• C. Enable Storage I/O Control on the cluster containing APPVM01 and DBVM01
• D. Enable Storage I/O Control on the datastore containing APPM01 and DBVM01
• E. Configure APPVM01 with a shares limit of High, and DBVM01 with a shares limit of Normal

Correct answer: D, E

Explanation

Option D is correct because enabling Storage I/O Control on the datastore allows for prioritization of I/O requests, thus mitigating the impact of DBVM01 on APPVM01. Option E is also correct as setting APPVM01 with a High shares limit while keeping DBVM01 at Normal allows APPVM01 to receive more I/O resources. The other options do not directly address the issue of I/O contention on the datastore level.