Inter-disk allocation policies

The inter-disk allocation policy specifies the number of disks on which the physical partitions of a logical volume are located.

The physical partitions for a logical volume might be located on a single disk or spread across all the disks in a volume group. The following options are used with the mklv and chlv commands to determine inter-disk policy:

• The Range option determines the number of disks used for a single physical copy of the logical volume.
• The Strict option determines whether the mklv operation succeeds if two or more copies must occupy the same physical volume.
• The Super Strict option specifies that the partitions allocated for one mirror cannot share a physical volume with the partitions from another mirror.
• Striped logical volumes can only have a maximum range and a super strict inter-disk policy.