8x00 Enterprise Virtual Array updating product software guide (XCS 6.200) (5697-7958, February 2009)

• Before you upgrade any storage system in an HP Continuous Access EVA relationship, ensure that

all storage systems in the storage network are running the same version of controller software.

This will ensure that when you upgrade one storage system, the storage n et work will have only

two versions of controller software. You cannot have more than two versions in an HP Continuous

Access EVA environment.

• During the time that the HP Continuous Access EVA storage systems are running different controller

software versions, you cannot make any conﬁguration changes to your storage systems.

• You must perform the necessary upgrades to the storage systems in the HP Continuous Access

EVA relationship within sixty d ays (1440 hours) to make all controller software versions the same.

CAUTION:

In an HP Continuous Access EVA environment, do not begin the upgrade until the following conditions

are met. If you attempt to upgrade the controllers before the following conditions are met, controller

operation will fail.

• Ensure that no DR group is logging, merging, or copying. Furthermore, none of the DR groups can

be in a failsafe locked state.

Click the DR group icon in the Navigation pane.

Check the Log state in the DR Group Properties window.

• Ensure the connection between the storage systems is not compromised or failed.

Click the Data Replication folder in the Navigation pane.

Check the Connection State in the Data Replication Folder Properties window.

• All E VA storage systems must be running normally with fully functional controller pairs.

• After upgrading the ﬁrst storage system (for example, the source), wait at least three minutes and no

more than one week before upgrading the second storage system. Ensure the preceding conditions

aremetonthesecondsystem.

Upgrading disk d rive ﬁrmware in an HP Continuous Access EVA environment

When upgrading disk drive ﬁrmware in an HP Continuous Access EVA environment, the following

requirements must be met. See HP StorageWorks Continuous Access EVA implementation guide for

more information.

• Verify that all DR groups are not failsafe mode enabled or in the failsafe locked state (DR group

failsafemodeshouldbedisabled).

• Suspend replication and disable the intersite link or modify zoning to isolate the source array

from the destination array.

• Upgrade the disk drive ﬁrmware on the destination array.

• Re-establish intersite link communication between the arrays and resume replication, allowing

the DR g roup merges to complete.

• Perform site failover.

• Suspend replication and disable the intersite link or modify zoning to isolate the source array

from the destination array.

• Upgrade the disk drive ﬁrmwareonthenewdestinationarray(beforesitefailover,thiswas

the source array).

• Re-establish intersite link communication between the arrays and resume replication, allowing

the DR g roup merges to complete.

• Per form site failback.

Saving storage system conﬁguration information

Estimated time to complete: 10–15 minutes

When to perform: As close as possible to the upgrade

Pre-upgrade tasks