Types of disk ownership

The HA or Disaster Recovery (DR) state of the system that owns a disk can affect which system has access to the disk. This means that there are several types of ownership for disks.

Disk ownership information is set either by ONTAP or by the administrator, and recorded on the disk, in the form of the controller module's unique system ID (obtained from a node's NVRAM card or NVMEM board).

Disk ownership information displayed by ONTAP can take one or more of the following forms. Note that the names used vary slightly depending on the context.