Removal and replacement procedures 27
Hard drive
IMPORTANT: Hot-plug capability and drive LED support are only available when a supported
optional controller is installed in the server.
To remove the component:
1. Back up all data on the hard drive.
2. Power down the server (on page 25).
CAUTION: To prevent improper cooling and thermal damage, do not operate the server
unless all bays are populated with either a component or a blank.
3. Remove the hard drive.
To replace the component, reverse the removal procedure.
When adding hard drives to the server, observe the following general guidelines:
• The system automatically sets all drive numbers.
• If only one hard drive is used, install it in the bay with the lowest drive number.
• Drives must be the same capacity to provide the greatest storage space efficiency when drives are
grouped together into the same drive array.
Optional storage controllers provide support for hot-plug capability and drive LEDs. Controller options are
as follows:
• The embedded controller supports SATA hard drives and drive LEDs in hot-plug carriers. Hot-plug
operation is not supported.
• Optional SAS controllers support hot-plug SAS or SATA hard drives and drive LEDs.
NOTE: ACU does not support mixing SAS and SATA drives in the same logical volume.