Dell Adaptec U320 SCSI Raid 0 or 1 Controller Card - Manual (Page 15)

NOTICE: It is recommended that you not use the unused portion of the global hot spare as it may result in a
single drive RAID 1.
Drive Roaming
Drive roaming enables a RAID volume to be moved from one controller to another controller without interruption.
Each drive has a unique ID which can be physically changed by setting a jumper to allow drive roaming.
Formatting
Most drives can re-assign sectors to recover from failures.
Formatting a drive may allow re-assigning of failed sectors, allowing a RAID controller to utilize the drive. See
"
Verifying or Formatting a Disk " for more information.
Rebuilding
The Rebuild feature of the Adaptec U320 SCSI RAID 0 or 1 allows for an array to synchronize the hard drives, and
restore fault tolerance in a redundant RAID array. See "
Rebuilding Arrays " for more information.
Configuration Planning
Optimal configurations are different for each unique purpose. When planning your RAID configuration, factors to
consider are:
Number of hard drives
Purpose of the Array
Fault Tolerance
Performance
Capacity
Spare Drives
Global Hot Spares
Entering the BIOS Configuration Utility
During POST of the system a splash screen will appear: