DMP assigns enclosure-based names to DMP metadevices using an array-specific attribute called the Array Volume ID (AVID). The AVID is a unique identifier for the LUN that is provided by the array. The Array Support Library (ASL) corresponding to the array provides the AVID property. Within an array enclosure, DMP uses the Array Volume Identifier (AVID) as an index in the DMP metanode name. The DMP metanode name is in the format enclosureID_AVID.

The SF utilities such as vxdmpadm getdmpnode display the DMP metanode name, which includes the AVID property. Use the AVID to correlate the DMP metanode name to the LUN displayed in the array management interface (GUI or CLI) .

If the ASL does not provide the array volume ID property, then DMP generates an index number. DMP sorts the devices seen from an array by the LUN serial number and then assigns the index number. In this case, the DMP metanode name is in the format enclosureID_index.