Compaq AA-RHGWC-TE manual 42Using Fibre Channel Storage

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Record the unit name of each partition with the intended use for that partition (see Table 6–2).

Set an identifier for each storage unit. Use any number between 1 and 9999.

To keep your storage naming as consistent and simple as possible, consider using the unit number of the unit as its UDID. for instance, if the unit number is D133, use 133 as the UDID. Note, however, that the identifier must be unique. If you have multiple RA8000 or ESA12000 storage arrays, a unit number such as D133 might not be unique across the storage arrays.

The identifier you select shows up as the user defined identifier (UDID) in the wwidmgr -show wwid display. It will be used by the WWID manager when setting the device unit number and boot_def_dev console environment variable. The identifier also shows up during the Tru64 UNIX installation to allow you to select the Tru64 UNIX installation disk.

The identifier is also used with the hardware manager view devices command (hwmgr -view devices) to locate the /dev/disk/dskn value.

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We recommend that you set the identifier for all Fibre Channel storagesets. It provides a sure method of identifying the storagesets. Make the identifiers unique numbers within the domain (or within the cluster at a minimum). In other words, do not use the same identifier on more than one HSG80. The identifiers should be easily recognized. Ensure that you record the identifiers (see Table 6–2).

Enable access to each unit for those hosts that you want to be able to access this unit. Because access was initially disabled to all hosts, you can ensure selective access to the units. If you do not remember the connection names, use the HSG80 show connection command as shown in Example 6–1 to determine the HSG80 connection names for the connection to the KGPSA host bus adapters. Many of the connections used here are shown in Example 6–1.

Use the connection name for each connection to the KGPSA host bus adapter on the host for which you want access enabled. Many of the connections used here are shown in Example 6–1.

Use the SHOW unit command (where unit is D131 through D133 and D141 through 144 in the example) to verify the identifier and that access to each unit is correct. Ensure that there is no connection to an

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