For fully optimized support of any array and for support of more complicated array types, Dynamic Multi-Pathing (DMP) requires the use of array-specific array support libraries (ASLs), possibly coupled with array policy modules (APMs). ASLs and APMs effectively are array-specific plug-ins that allow close tie-in of DMP with any specific array model.

See the Hardware Compatibility List for the complete list of supported arrays.

https://www.veritas.com/support/en_US/article.000107677

During device discovery, the DDL checks the installed ASL for each device to find which ASL claims the device.

If no ASL is found to claim the device, the DDL checks for a corresponding JBOD definition. You can add JBOD definitions for unsupported arrays to enable DMP to provide multi-pathing for the array. If a JBOD definition is found, the DDL claims the devices in the DISKS category, which adds the LUNs to the list of JBOD (physical disk) devices used by DMP. If the JBOD definition includes a cabinet number, DDL uses the cabinet number to group the LUNs into enclosures.

See Adding unsupported disk arrays to the DISKS category.

DMP can provide basic multi-pathing to arrays that comply with the Asymmetric Logical Unit Access (ALUA) standard, even if there is no ASL or JBOD definition. DDL claims the LUNs as part of the aluadisk enclosure. The array type is shown as ALUA. Adding a JBOD definition also enables you to group the LUNs into enclosures.