Overland Storage REO 9000 - Manual (Page 141)

Determining Whether a Disk Drive is Faulty or There is a Problem with the REO Appliance W 141
Setup Guide
Re-Creating a Hot Spare (RAID 5 With Hot Spares)
When an issue arises with a disk in a RAID 5 configuration and you are
using hot spares, the disk in question moves to the FREE DRIVE POOL
section, and the system automatically begins a rebuild process by using
the disk initially designated as a hot spare.
The questionable disk remains in the FREE DRIVE POOL section and is
assigned a Hot Spare button. To determine if the questionable disk needs
to be replaced, you can use it to re-create a hot spare. If process fails, you
must replace the disk.
To test the disk by creating a hot spare
1 Make sure that none of the initiators (servers) have active connections
with the REO Appliance.
A rebuild begins with the
hot spare replacing the
questionable disk.
This disk displays a
Hot Spare button.