System Management Concepts: Operating System and Devices

Implementing Volume Group Policies

1. Use the lspv command to check your allocated and free physical volumes. In a standard configuration, the more disks that make up a quorum volume group the better the chance of the quorum remaining when a disk failure occurs. In a nonquorum group, a minimum of two disks must make up the volume group.
2. To ensure a quorum, add one or more physical volumes. See Add fixed disk without data to existing volume group, or Add fixed disk without data to new volume groupfor more information. To change a volume group to nonquorum status, see Change a User-Defined Volume Group to Nonquorum Status.
3. The standard configuration provides a single volume group that includes multiple physical volumes attached to the same disk adapter and other supporting hardware. Reconfiguring the hardware is an elaborate step. Separate hardware is only necessary if your site requires high availability.