HP StorageWorks 8/40 HP StorageWorks Fabric OS 5.2.x administrator guide (5697 - Page 150
Effects of firmware changes on accounts and passwords, Considerations for FICON CUP environments
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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 43 Effects of firmware changes on accounts and passwords Change Upgrading Downgrading Upgrading to v3.2.0 First time Subsequent times (after upgrade, then downgrade, then upgrade) Default accounts and their passwords User-defined and default accounts are preserved. and their passwords are preserved. User-defined accounts are no longer valid.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. (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. 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 150 Installing and maintaining firmware
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