Removing a disk unit from a disk pool

As your storage needs change, you can select to remove a disk unit from a disk pool.

When you remove a disk unit, the system redistributes the data on that disk unit to other disk units in the disk pool. The removal is not allowed if there is not enough disk capacity in the disk pool to store all the data from the removed disk unit. You cannot remove all the disk units from a disk pool.

Depending on disk unit capacity and performance, the remove process can take from several minutes to over an hour to complete, potentially affecting system performance.

To remove a disk unit from a disk pool using System Service Tools (SST), follow these steps:

Start SST (STRSST).
Select Work with disk units.
Select Work with disk configuration.
Select Work with removing units from configuration.
Select Remove units from configuration
Select the disk unit that you want to remove from the configuration.
Confirm the function.

IBM® Navigator for i can be used to remove a disk unit from a varied off independent disk pool.

Select Configuration and Service from your IBM Navigator for i.
Select Disk Units.
Right-click the disk unit that you want to remove and select Remove.
Follow the instructions on the dialog box that is displayed.

IBM Navigator for i can also be used to remove a disk unit from system disk pools, basic disk pools, and independent disk pools that are varied on.

Select Configuration and Service from your IBM Navigator for i.
Select Disk Pools.
Right-click the disk pool that you want to remove disk units from and select Remove Disk Units.
Follow the instructions on the dialog box that is displayed.