We are setting up HP servers with internal storage using different disk sizes/speeds for different virtual machines.
Are there any drawbacks to consider, if we use one global spare drive?
The spare drive would be large enough to match the bigger disks but with lower rpm than the faster ones.
An example configuration could be as follows: 2x 300Gb 15k SAS drives, 2x 600Gb 10k SAS drives, 1 global spare 600Gb 10k SAS drive.
Slower performance in the event of a 15k drive failure are not an issue, but risks of damaging disks because of different speed would be concerning.