An older server has performance problems writing files to a RAID array.
After checking for failed drives, no problems are found.
Which of the following should be checked NEXT?
Click on the arrows to vote for the correct answer
A. B. C. D.B.
The next thing to check after verifying that there are no failed drives on an older server experiencing performance issues writing files to a RAID array would be the cache battery.
Explanation:
A cache battery or backup battery unit (BBU) is an essential component of a RAID controller card. It is responsible for preserving cached data in the event of a power loss. When a write operation is performed on a RAID array, the data is first written to the cache on the controller card before being written to the physical disks. If a power failure occurs before the data is written to the physical disks, the cached data may be lost or corrupted. This can cause data integrity issues and performance problems.
If the cache battery is failing or has failed, it can cause slow write performance to the RAID array, as the controller card may need to write directly to the physical disks instead of caching the data. This can significantly reduce performance and throughput.
Therefore, the next thing to check after verifying that there are no failed drives on an older server experiencing performance issues writing files to a RAID array would be the cache battery. The cache battery should be checked for its health status, and if it is failing or has failed, it should be replaced immediately to avoid data loss and performance issues.