Symptoms
When assigning a spare drive to a logical drive, the spare drive does not appear in the available drives list.
Condition when the problem occurs
This issue occurs when the spare drive does not meet the capacity requirements or when there is a drive type mismatch.
Solution
Ensure that the spare drive's capacity is equal to or greater than that of the member drives. Also, avoid mixing different drive types, such as SATA and SAS, within the same logical array.