The DMP node name is the meta device name which represents the multiple paths to a disk. The DMP node name is generated from the device name according to the VxVM naming scheme.
See Disk device naming in VxVM.
You can specify a customized name for a DMP node. User-specified names are persistent even if names persistence is turned off.
You cannot assign a customized name that is already in use by a device. However, if you assign names that follow the same naming conventions as the names that the DDL generates, a name collision can potentially occur when a device is added. If the user-defined name for a DMP device is the same as the DDL-generated name for another DMP device, the vxdisk list command output displays one of the devices as 'error'.
You can also assign names from an input file. This enables you to customize the DMP nodes on the system with meaningful names.