8100 Updating Product Software Guide (XCS 6.250) (5697-1716, February 2012)

proceed after such a pause, review the controller logs to establish where you are in the upgrade

process and relaunch the online upgrade. The upgrade will start where it left off.

CAUTION: When upgrading disk drive firmware:

• Do not power off any components or perform controller resynchronizations or reboots.

• Upgrade the disk drive firmware after you upgrade the storage system software.

• Perform the upgrade during periods of low I/O to minimize the time it takes to restore

information to the drive after the upgrade.

• If an error occurs, the upgrade process stops. You must restart it to upgrade disks that have

not yet been upgraded. Any disks that were upgraded before the error occurred do not have

to be upgraded again. Check the logs to verify status. When you restart the process, it begins

with the next disk that needs to be upgraded.

Upgrading firmware on all disks

Upgrade the disk drive firmware after you upgrade the controller software.

1. Confirm that there is enough free space to manage disk failures that might occur after the disk

firmware upgrade. For more information, see the capacity management details in the best

practices configuration white paper (for your array model), located at:

http://h18006.www1.hp.com/storage/arraywhitepapers.html

2. Reduce array maintenance overhead by setting the disk replacement delay to 5 minutes (see

figure).

Once the upgrade is complete, reset the disk replacement delay value to the default (1 minute.

The 5 minute setting prevents triggering unwanted migration and reversion processes as disks

are upgraded.

50 Upgrading the Enterprise Virtual Array