HP StorageWorks Fabric OS 5.2.x administrator guide (5697-0014, November 2009)

150 Installing and maintaining firmware
Effects of firmware changes on accounts and passwords
The following table describes what happens to accounts and passwords when you replace the switch
firmware with a different version.
For more details on administrative domains and firmware download, see ”Managing administrative
domains” on page 127. For more details on older releases of Fabric OS, refer to ”Using Remote Switch” on
page 411.
Also, for details about downgrading and restoring firmware, refer to ”Testing and restoring firmware-on
Directors” on page 161.
Considerations for FICON CUP environments
To prevent channel errors during nondisruptive firmware installation, the switch CUP port must be taken
offline from all host systems.
Preparing for a firmware download
Before executing a firmware download, it is recommended that you perform the tasks mentioned in this
section. In the unlikely event of a failure or time-out, the preparation tasks that are described in this section
will enable you to provide HP Technical Support all the information required to perform advanced
troubleshooting.
To provide specific information about why a firmware downgrade might fail, starting in Fabric OS 5.2.x,
the following exception cases are checked. If you’re attempting to downgrade to Fabric OS 5.1.x or lower
Table 43 Effects of firmware changes on accounts and passwords
Change First time Subsequent times
(after upgrade, then
downgrade, then upgrade)
Upgrading Default accounts and their passwords
are preserved.
User-defined and default accounts
and their passwords are preserved.
Downgrading User-defined accounts are no longer
valid. Default accounts and their
passwords are preserved. If a default
account was disabled, it is
re-enabled after the downgrade.
User-defined and default accounts
and their passwords are preserved,
including accounts added after the
first upgrade.
Upgrading to
v3.2.0
(You might upgrade a switch in the fabric as part of ”Checking connected
switches” on page 152.) Earlier versions allowed you to change the default
account names. You cannot add user-defined accounts until you change the
names back to default with the passwdDefault command.