Compaq AA-RHGWB-TE manual Using Fibre Channel Storage

14Partition for cluster /usr filesystem.

15Partition for cluster /var filesystem.

16Assign a unit number to each partition. When the unit is created by the ADD UNIT command, disable access to all hosts. This allows selective access in case there are other systems or clusters connected to the same switch as our cluster.

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

17Set the identifier for each storage unit. Use any number between 1 and 9999. The number you select for the storage unit shows up as the user define identifier (UDID) in the wwidmgr -show wwid display. It will be used by the WWID manager when setting the device unit number and bootdef_dev console environment variable.

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

It will also show up during the Tru64 UNIX installation to allow you to select the Tru64 UNIX installation disk.

____________________ Note _____________________

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).

18Enable 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.

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.

19Use 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 unwanted system. Record the identifier and worldwide name for later use. Table 6–2 is a sample table filled in for the example. Table A–1 in Appendix A is a blank table for your use in an actual installation. Note

Using Fibre Channel Storage 6–39