Adding Disk Units to a HyperSwap Configuration

Learn how to add additional disk units to an existing HyperSwap configuration

Before you begin

These steps assume the user has experience configuring and managing an IBM® System Storage® DS8000® and has a functioning HyperSwap configuration running.

For more information about using an IBM System Storage DS8000 unit, see Copy Services in the IBM System Storage DS8000 Information Center pages.
Review Configuring DS8000 Full System HyperSwap or Configuring DS8000 HyperSwap with independent auxiliary storage pools (IASPs) in the IBM i Knowledge Center to set up the initial configurations.

About this task

Either the SYSBAS volumes or the IASP volumes of your high availability HyperSwap configuration might require additional storage capacity. If your established HyperSwap environment requires additional disk units for more capacity, complete the following procedure to add units to the system or an existing IASP in a HyperSwap environment:

Procedure

1. To add new disk units to the system, user, or independent ASP, first create the new disk units (LUNs) on the source DS8000 storage controller.

2. Assign these LUNs on the source DS8000 storage controller to the IBM i.

3. Initialize and format the new non-configured units.

4. Create the new LUNs on the HyperSwap target DS8000 storage controller.

Important: Do not assign the newly created HyperSwap target LUNs to the IBM i yet.

5. Configure HyperSwap replication for the new LUNs:

6. Assign the target LUNs to the same IBM i partition.

7. Verify with the Work with HyperSwap Status (WRKHYSSTS) command that HyperSwap is currently active for the ASP the units will be added to. In the example below, HyperSwap status is active for all ASP devices shown on the Work with HyperSwap Status display:

8. Add the new units to the ASP using SST:

9. Verify with the Work with HyperSwap Status (WRKHYSSTS) command that HyperSwap is currently active for the ASP that units were added.

Tip: Using option 5 on an ASP device on the Work with HyperSwap status display will show the individual disk units. The new LUNs are now visible on this display.

10 . If using either HyperSwap with LUN Level Switching or HyperSwap with Global Mirror complete the following additional steps to enable PowerHA management of the new LUNs:

Results

The expanded storage in your HyperSwap environment on your IBM i partition is available for use.