Assigning disk pools

You must assign the attached disk shelves to the appropriate pools.

You can explicitly assign disks on the attached disk shelves to the appropriate pool with the disk assign command. Using wildcards in the command enables you to assign all the disks on a disk shelf with one command.

The following table shows the pool assignments for the disk shelves in the example used in this section.

Disk shelf... At site... Belongs to... And is assigned to that node's...
Disk shelf 1 Site A Node A Pool 0
Disk shelf 2
Disk shelf 3 Node B Pool 1
Disk shelf 4
Disk shelf 5 Site B Node B Pool 0
Disk shelf 6
Disk shelf 7 Node A Pool 1
Disk shelf 8
Note: Pool 0 always contains the disks that are local to (at the same site as) the storage system that owns them.

Pool 1 always contains the disks that are remote to the storage system that owns them.

  1. Boot Node A into Maintenance mode.
  2. Assign the local disks to Node A pool 0 by entering the following command at the console:disk assign switch2:port3.* -p 0 This indicates that the disks attached to port 3 of switch 2 are assigned to pool 0. The asterisk (*) indicates that all disks attached to the port are assigned.
  3. Assign the remote disks to Node A pool 1 by entering the following command at the console:disk assign switch4:port5.* -p 1 This indicates that the disks attached to port 5 of switch 4 are assigned to pool 1. The asterisk (*) indicates that all disks attached to the port are assigned.
  4. Boot Node B into Maintenance mode.
  5. Assign the local disks to Node B pool 0 by entering the following command at the console:disk assign switch4:port3.* -p 0 This indicates that the disks attached to port 3 of switch 4 are assigned to pool 0. The asterisk (*) indicates that all disks attached to the port are assigned.
  6. Assign the remote disks to Node B pool 1 by entering the following command at the console:disk assign switch2:port5.* -p 1 This indicates that the disks attached to port 5 of switch 2 are assigned to pool 1. The asterisk (*) indicates that all disks attached to the port are assigned.
Proceed to verify the disk paths on the system.