What steps should the Administrator take to increase Storage Gateway performance?
Change the default block size for the Storage Gateway from 64 KB to 128 KB, 256 KB, or 512 KB to improve I/O performance.
Create a larger disk for the cached volume. In the AWS Management Console, edit the local disks, then select the new disk as the cached volume.
Ensure that the physical disks for the Storage Gateway are in a RAID 1 configuration to allow higher throughput.
Take point-in-time snapshots of all the volumes in Storage Gateway, flush the cache completely, then restore the volumes from the clean snapshots.
Explanations:
Changing the block size may have some impact on performance but is not directly related to the issues described (CacheHitPercent and CachePercentUsed). The problem lies in the cache capacity, not the block size.
Creating a larger disk for the cached volume would increase the available cache space, which can help improve the CachePercentUsed metric. This would directly address the issue of the cache being over 90% used.
RAID 1 configuration improves redundancy and fault tolerance, not throughput for the Storage Gateway cache. The issue is related to cache capacity, not disk configuration.
Taking snapshots and flushing the cache could momentarily free up space, but it does not address the underlying issue of insufficient cache capacity. This is not a sustainable solution for performance improvement.
I believe the answer is:
Create a larger disk for the cached volume. In the AWS Management Console, edit the local disks, then select the new disk as the cached volume.