HP StorageWorks 2/8V HP StorageWorks Fabric OS 5.3.x administrator guide (5697 - Page 172
Upgrading and downgrading firmware, Effects of firmware changes on accounts and passwords
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CAUTION: For each switch in your fabric, complete all firmware download changes on the current switch before issuing the firmwareDownload command on the next switch. This process ensures nondisruption of traffic between switches in your fabric. To verify the firmwareDownload process is complete, enter the firmwareDownloadStatus command on the switch, verify the process is complete, then move on to the next switch. Upgrading and downgrading firmware Upgrading means installing a newer version of firmware; "downgrading" means installing an older version of firmware. In most cases, you will be upgrading firmware; that is, installing a newer firmware version than the one you are currently running. However, some circumstances might require installing an older version; that is, downgrading the firmware. The procedures in this section assume that you are upgrading firmware, but they work for downgrading as well, provided the old and new firmware versions are compatible. Also, always reference the latest Fabric OS release notes for updates that may exist regarding downgrades under particular circumstances. Using the CLI (or Web Tools), you can upgrade the firmware on one switch at a time. You can use the optionally licensed Fabric Manager software tool to upgrade firmware simultaneously on multiple switches. For more details on Fabric Manager and other licensed software tools, go to the HP web site, http://www.hp.com. 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. Table 50 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 User-defined and default accounts are preserved. 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 Downgrading User-defined accounts are no longer valid.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 176.) 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. For more details on administrative domains and firmware download, see "Managing administrative domains" on page 149. For more details on older releases of Fabric OS, refer to "Using Remote Switch" on page 453. Also, for details about tesing and restoring firmware, refer to "Testing and restoring firmware-on Directors" on page 186. 174 Installing and maintaining firmware
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