A vSAN administrator notices that all the applications on a vSAN cluster are suffering from performance degradation. The main applications on this cluster are very random write-intensive and generate a lot of i/o. De-staging seems to be going awfully slow.
Given the following information:
• Each host has a single disk group.
• Each disk group has 7 capacity disks.
• The size of each cache disk is 600 GB.
How should the administrator solve this problem?
The performance degradation in a vSAN cluster with random write-intensive applications is likely due to insufficient cache capacity. While increasing the size of the cache disks might seem beneficial, it does not address the fundamental issue of throughput and parallelism in de-staging operations. Adding additional disk groups will introduce more cache disks and capacity disks, which will enhance the write cache and improve de-staging performance by allowing parallel processing and reducing the load on a single disk group.
My answer is A.