Article Number: 000178190
Note: This article is part of the Server Tutorials: "RAID and Disks" available in KB article 131039: PowerEdge Tutorials: Physical Disks and RAID Controller (PERC) on Servers .
A global hot spare is an unused backup disk that is part of the disk group. Hot spares remain in standby mode. When a hard drive that is used in a virtual disk fails, the assigned hot spare is activated to replace the failed hard drive without interrupting the system or requiring your intervention. When a hot spare is activated, it rebuilds the data for all redundant virtual disks that were using the failed hard drive.
You can change the hot spare assignment by unassigning a disk and choosing another disk as needed. You can also assign more than one hard drive as a global hot spare.
To assign or unassign a global hot spare for a hard drive, complete the following steps:
Does my controller support this feature? See Supported Features.
In the iDRAC web interface, go to Configuration > Storage Configuration.
The Storage Configuration page is displayed.
From the Controller drop-down menu, select the controller to view the associated hard drives.
Click Physical Disk Configuration.
All the hard drives associated to the controller are displayed.
To assign as a global hotspare, from the drop-down menus in the Action column, select Assign Global Hotspare for one or more hard drives.
To unassign a hot spare, from the drop-down menus in the Action column, select Unassign Hotspare for one or more hard drives.
Click Apply Now.
Depending on your requirement, you can also choose to apply At Next Reboot or At Scheduled Time. The settings are applied based on the selected operation mode.
13 Oct 2021