Grass Valley Network Attached Storage System Serial ATA Network User Guide v.1.0.04 - Manual (Page 154)

Disk Drives
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Freeing Spares
Use the Free Spares window to designate one or more spare drives as free
drives. Access the window from the Storage menu by choosing
RAID System
| Disk Drive | Free Spares . Free drives are not available for rebuilding a logical
unit.
1. Specify one or more disk drives. Click on each disk drive to be made into a
free drive.
2. To make the selected disk drives free drives, click Save .
Disabling a Disk Drive
Before you can replace a drive in the array, it must be disabled. When the array
system determines that a drive is bad, it disables that drive. If you choose to
upgrade a drive for any reason, you must disable it, and then you can replace it
physically.
>>> Do not remove a drive unless the controller failed it (light on drive blinks an
alternate blue), or you disable it through the NewsShare NAS software.
Removing a drive without following the drive failure procedure can cause
loss of data.