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In a normal state, you cannot add a disk to a RAID 0 or RAID 1 configuration. Any disk that you
install will not be used unless you subsequently reconfigure the storage system.
Warning: Reconfiguring your storage system disks deletes all the data on your
storage system.
However, if you currently have three disks and a RAID 5 configuration, you can add a fourth
disk as a spare (essentially changing from RAID 5 to RAID 5 + spare while retaining all your
existing data).
In a degraded state, you can add a disk to a RAID at any time, and the new disk will be rebuilt
to replace the disk that was removed or failed.
Warning: If the RAID has failed—that is, if so many disks have failed or been
removed that the RAID can no longer function—you must either re-install the
disks or reconfigure the entire storage system, deleting all the data on your
system.
Adding hard disks to a linear or normal RAID configuration
To add a hard disk to a linear or normal RAID configuration:
1. Insert the hard disk into the storage system. You can do this whether the storage system is
powered on or off.
2. Access the Manager or refresh the browser window to open the Disk Change Notification
page (Figure B-1).