Verifying disk assignment in Maintenance mode in an eight-node or a four-node configuration

Before fully booting the system to ONTAP, you can optionally boot to Maintenance mode and verify the disk assignment on the nodes. The disks should be assigned to create a fully symmetric active-active configuration, where each pool has an equal number of disks assigned to them.

About this task

New MetroCluster systems have disk assignment completed prior to shipment.

The following table shows example pool assignments for a MetroCluster configuration. Disks are assigned to pools on a per-shelf basis.

Disk shelf (sample_shelf_name)... At site... Belongs to... And is assigned to that node's...
Disk shelf 1 (shelf_A_1_1) Site A Node A 1 Pool 0
Disk shelf 2 (shelf_A_1_3)
Disk shelf 3 (shelf_B_1_1) Node B 1 Pool 1
Disk shelf 4 (shelf_B_1_3)
Disk shelf 5 (shelf_A_2_1) Node A 2 Pool 0
Disk shelf 6 (shelf_A_2_3)
Disk shelf 7 (shelf_B_2_1) Node B 2 Pool 1
Disk shelf 8 (shelf_B_2_3)
Disk shelf 1 (shelf_A_3_1) Node A 3 Pool 0
Disk shelf 2 (shelf_A_3_3)
Disk shelf 3 (shelf_B_3_1) Node B 3 Pool 1
Disk shelf 4 (shelf_B_3_3)
Disk shelf 5 (shelf_A_4_1) Node A 4 Pool 0
Disk shelf 6 (shelf_A_4_3)
Disk shelf 7 (shelf_B_4_1) Node B 4 Pool 1
Disk shelf 8 (shelf_B_4_3)
Disk shelf 9 (shelf_B_1_2) Site B Node B 1 Pool 0
Disk shelf 10 (shelf_B_1_4)
Disk shelf 11 (shelf_A_1_2) Node A 1 Pool 1
Disk shelf 12 (shelf_A_1_4)
Disk shelf 13 (shelf_B_2_2) Node B 2 Pool 0
Disk shelf 14 (shelf_B_2_4)
Disk shelf 15 (shelf_A_2_2) Node A 2 Pool 1
Disk shelf 16 (shelf_A_2_4)
Disk shelf 1 (shelf_B_3_2) Node A 3 Pool 0
Disk shelf 2 (shelf_B_3_4)
Disk shelf 3 (shelf_A_3_2) Node B 3 Pool 1
Disk shelf 4 (shelf_A_3_4)
Disk shelf 5 (shelf_B_4_2) Node A 4 Pool 0
Disk shelf 6 (shelf_B_4_4)
Disk shelf 7 (shelf_A_4_2) Node B 4 Pool 1
Disk shelf 8 (shelf_A_4_4)

Procedure

  1. Confirm the shelf assignments: disk show –v
  2. If necessary, explicitly assign disks on the attached disk shelves to the appropriate pool by using the disk assign command.
    Using wildcards in the command enables you to assign all of the disks on a disk shelf with one command. You can identify the disk shelf IDs and bays for each disk with the storage show disk –x command.