Hard Drive Installation and Replacement

•Do not move an array that is configured with RAID ADG to a controller that does not support RAID ADG. Only controllers that support RAID ADG can recognize a drive array that has this configuration.

When all the conditions have been met:

1.Back up all data before removing any drives or changing configuration. This step is required if you are moving data-containing drives from a controller that is not battery backed.

2.Power down the system.

3.Move the drives.

4.Power up the system.

A 1724 POST message is displayed, indicating that drive positions were changed and the configuration was updated.

CAUTION: If a 1785 (Not Configured) POST message is displayed, power down the system immediately to avoid data loss, and then return the drives to their original locations.

5.Restore the data from backup if necessary.

You can now check the new drive configuration by running ORCA or ACU (for details, refer to Chapter 5).

Upgrading Hard Drive Capacity

You can increase the storage capacity on a system by swapping drives one at a time for higher capacity drives. This method is viable as long as a fault-tolerance method is running, and can be done even if there are no available drive bays.

CAUTION: Since a data rebuild takes about 15 minutes per gigabyte, the system is unprotected against drive failure for many hours, or even days, while the rebuild is in progress.

To upgrade hard drive capacity:

1.Back up all data.

E-10

HP Smart Array 641/642 Controller User Guide