HP ProLiant DL580 User Manual page 54

Drives should be the same capacity to provide the greatest storage space efficiency when drives are grouped
together into the same drive array.
For hard drive numbers, see "Device numbers (on page 18)."
To install the component:
Remove the hard drive blank.
1.
Prepare the SAS hard drive.
2.
Install the hard drive.
3.
Determine the status of the drive from the hot-plug SAS hard drive LED combinations
4.
combinations" on page 19).
("Hard drive LED
Hardware options installation 54