Checklist 5: Moving disk units between non mirrored auxiliary storage pools
Use this checklist to perform a sequence of tasks to move one or more disk units from one auxiliary storage pool （ASP） to another ASP when the ASPs do not have mirrored protection.
You must stop your system and use dedicated service tools (DST) to perform the tasks in this checklist.
Note: You cannot move disk units to or from an independent ASP.
Before you begin, make a copy of this checklist. Complete the appropriate areas as you or the service representative perform the configuration tasks. This checklist provides an important record of your actions. It can help you diagnose any problems that occur.
Attention: When you perform the tasks in this checklist, the system moves large amounts of data. Make sure that you have saved your system completely in the event that you need to recover from an error situation.
Most tasks in the checklist include references to other topics in this document. Refer to these topics if you need more information about how to perform a particular task.
| Task | What to do | Where to read more about it |
|---|---|---|
| ___ Task 1 | Print your current disk configuration. | Displaying your disk configuration. |
| ___ Task 2 | Calculate the space requirements for both the source and target ASPs for the disk units. | Calculating space requirements for an auxiliary storage pool. |
| ___ Task 3 | Use option 21 from the Save menu to save your entire system. | |
| ___ Task 4 | Start DST. | Starting dedicated service tools. |
| ___ Task 5 | Move the disk units. | Moving a disk unit to a different auxiliary storage pool. |
| ___ Task 6 | If you created a new ASP on your system when you moved disk units, the system set the storage threshold for the ASP to 90%. If you want a different threshold, change it. | Changing the storage threshold for an auxiliary storage pool. |
| ___ Task 7 | Specify the storage threshold for the system ASP. If you use the QSTGLOWLMT and QSTGLOWACN system values, you can prevent the system ASP from filling to capacity and causing an abnormal shutdown. | Changing the storage threshold for the system auxiliary storage pool. |
| ___ Task 8 | Verify that your disk configuration is correct and print a copy for your records. | Displaying your disk configuration. |
| ___ Task 9 | End DST. | Stopping dedicated service tools. |
| ___ Task 10 | If necessary, move objects between ASPs. | Transferring objects between auxiliary storage pools. |