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Drive name formats

Each drive has a name that differentiates it from all other drives. Drive names have different formats, depending on the connection type (FC or SAS) and how the drive is attached.

Each drive has a universal unique identifier (UUID) that differentiates it from all other drives in the cluster.

The names of unowned drives (broken or unassigned drives) display the alphabetically lowest node name in the cluster that can see that drive.

The following table shows the various formats for drive names, depending on how they are connected to the storage system.
Note: For internal drives, the slot number is zero, and the internal port number depends on the system model.
Drive connection Drive name Example
SAS, direct-attached <node>:<slot><port>.<shelfID>.<bay>

The drive in shelf 2, bay 11, connected to onboard port 0a and owned by node1 is named node1:0a.2.11.

The drive in shelf 6, bay 3, connected to an HBA in slot 1, port c, and owned by node1 is named node1:1c.6.3.

SAS, direct-attached in multi-disk carrier disk shelf <node>:<slot><port>.<shelfID>.<bay>L<carrierPosition> Carrier position is 1 or 2.
SAS, direct-attached, for systems running Data ONTAP-v <slot><port>.<ID> The third virtual disk connected to the first port is named 0b.3. The second virtual disk connected to the third port is named 0d.2.

The range of ports is b through e, and the range of disks is 0 through 15.

FC, direct-attached <node>:<slot><port>.<loopID> The drive with loop ID 19 (bay 3 of shelf 1) connected to onboard port 0a and owned by node1 is named node1:0a.19.

The drive with loop ID 34 connected to an HBA in slot 8, port c and owned by node1 is named node1:8c.34.

FC, switch-attached <node>:<switch_name>.<switch_port>.<loopID> The drive with loop ID 51 connected to port 3 of switch SW7 owned by node1 is named node1:SW7.3.51.

You can use the storage disk show command to see the drive name for a particular drive using the initiator, shelf, and bay.