Physical Volumes (PV) are fixed disk devices attached to the system. The PV has a name, such as /dev/hdisk0 and has a permanently assigned identifier. The identifier is similar to a NIC address of an Ethernet adapter in that it is world wide unique. This allows a disk drive to be moved from one system to another with out conflict. To configure a new PV, connect it to the system and reboot or run "cfgmgr". After this is complete, as root, run "lspv" and see if your new disk is Available and has a PVID. If not run "chdev -l hdisk# -a pv=yes", this will cause a PVID to be assigned an make the disk available to the system. Hdisk numbers are assigned consecutively so if a disk fails and is removed, the corresponding data must be removed from ODM and Volume Group Descriptor Area. To do this and other disk manipulations, see Physical Volume Operations.

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