How to identify disk number or ID in NetApp filer.

 

How to identify disk number or ID in NetApp filer.

Disk Naming 

Let's also cover the naming convention for our disks. The controllers will be reading and writing data to those individual disks, so it needs a way to identify them individually. The naming convention is:

stack_id.shelf_id.bay_number

 For example, this was in stack ID 1, the shelf ID is 0, and the bay here is 23. When we're in the system manager or the command line viewing information there and see information about that disk, that disk would be identified as 1.0.23. Obviously, the bay next door would be 1.0.22.

 

 

Unfortunately it depends on your Data ONTAP version. With Data ONTAP 8.2.x (and earlier) drive names have different formats, depending on the connection type (FC-AL / SAS). Each drive has a universal unique identifier (UUID) that is a unique number from all other drives in your cluster.

Each disk is named wit their node name at the beginning. For example node1:0b.1.20 (node1 – nodename, 0 – slot, b – port, 1 – shelfID, 20 – bay).

In other words for SAS drives the name convention is <node>:<slot><port>.<shelfID>.<bay>

For SAS in multi-disk shelf the name convention is: <node>:<slot><port>.<shelfID>.<bay>L<position> – <position> is either 1, or 2 – in this shelf type two disks are inside a single bay.

For FC-AL name convention is: <node>:<slot><port>.<loopID>