Understanding persistent attributes

The vxassist command also lets you record certain volume allocation attributes for a volume. These attributes are called persistent attributes. You can record the attributes which would be useful in later allocation operations on the volume. Useful attributes include volume grow and enclosure mirroring. You can also restrict allocation to storage that has a particular property (such as the enclosure type, disk tag, or media type). On the other hand, volume length is not useful, and generally neither is a specific list of disks.

The persistent attributes can be retrieved and applied to the allocation requests (with possible modifications) for the following operations:

Persistent attributes let you record carefully described allocation attributes at the time of volume creation and retain them for future allocation operations on the volume. Also, you can modify, enhance, or even discard the persistent attributes. For example, you can add and retain a separation rule for a volume that is originally not mirrored. Alternatively, you can temporarily suspend a volume allocation which has proven too restrictive or discard it to allow a needed allocation to succeed.