HP Integrity rx4640 Server - Manual (Page 28)

Replacing, moving, or adding hard drives 28
c. Open ACU and navigate to the controller that contained the RAID ADG volume.
ACU displays the missing RAID ADG volume using a different icon to indicate that the volume is
unavailable.
d. Delete the RAID ADG volume.
e. Accept the configuration change, and then close ACU.
f. Power down the system.
4. Move the drives.
5. Power up the system. If a 1724 POST message is displayed, drive positions were changed
successfully and the configuration was updated.
If a 1785 (Not Configured) POST message is displayed:
a. Power down the system immediately to prevent data loss.
b. Return the drives to their original locations.
c. Restore the data from backup, if necessary.
6. Check the new drive configuration by running ORCA or ACU (" Configuring an array " on page 14 ).
Adding drives
You can add hard drives to a system at any time, as long as you do not exceed the maximum number of
drives that the controller supports. You can then either build a new array from the added drives or use the
extra storage capacity to expand the capacity of an existing array.
To perform an array capacity expansion, use ACU. If the system is using hot-pluggable drives, you can
expand array capacity without shutting down the operating system (that is, with the server online) if ACU
is running in the same environment as the normal server applications. (For more information, refer to the
HP Array Configuration Utility User Guide.)
The expansion process is illustrated in the following figure, in which the original array (containing data) is
shown with a dashed border and the newly added drives (containing no data) are shown unshaded. The
array controller adds the new drives to the array and redistributes the original logical drives over the
enlarged array one logical drive at a time. This process liberates some storage capacity on each of the
physical drives in the array. During this procedure, the logical drives each keep the same fault-tolerance
method in the enlarged array that they had in the smaller array.