Moving a disk unit to a different auxiliary storage pool

You might want to move a disk unit from one auxiliary storage pool (ASP) to another.

You want to create a user ASP for journal receivers and move some of the disk units on your system to the new user ASP. You can accomplish this in one process. When you move a disk unit to an ASP that does not exist, the system creates the ASP.

You might also decide to move disk units because you no longer need to have user ASPs on your system and you want to move all the disk units back to the system ASP.

Note: Disk units cannot be moved to or from an independent auxiliary storage pool.

Restrictions when changing your ASP configuration: Consider these things when you are planning to move disk units from an ASP:

The system might take a long time to move the disk unit because it must copy the data from that disk unit to other disk units in the ASP.
You cannot move unit 1 (the load source unit) from the system ASP.
You cannot move disk units from a user ASP that is overflowed.
You cannot move disk units in and out of the same ASP in the same operation.
When mirrored protection is active for an ASP, you cannot move disk units in and out of the ASP. You must remove disk units in pairs from a mirrored ASP. You can then add them to a different ASP.
When mirrored protection is active for the ASP that contains the disk units, you must remove both disk units of a mirrored pair.
When you remove a disk unit, it becomes nonconfigured.

To move disk units between ASPs, follow these steps:

If you are not already using dedicated service tools (DST), perform a manual initial program load (IPL) to start DST.
From the Use Dedicated Service Tools (DST) menu, follow these steps:
1. Select option 4 (Work with disk units).
2. Select option 1 (Work with disk configuration) on the Work with Disk Units display.
3. Select option 3 (Work with ASP configuration) on the Work with Disk Configuration display.

Select option 6 (Move units from one ASP to another) from the Work with ASP Configuration display. The Specify ASP to Move Disk Units display is shown.

                       Specify ASP to Move Disk Units
   To move units to different ASPs, specify the ASP that you want to move each
 one to in the 'New ASP' field.   Specify the units to be moved, press Enter.

   New  Current        Serial                   --Protected-- --Unprotected-- 
   ASP    ASP    Unit  Number      Type  Model   Size  %Used    Size   %Used
          1                                        0   0.00%    4124   41.50%
                   1   00-0193825  6602   030      0   0.00%    1031   82.00%
                   2   00-0163477  6602   030      0   0.00%    1031   29.00%
    2              3   00-0190494  6602   030      0   0.00%    1031   27.00%
    2              4   00-17900    6602   030      0   0.00%    1031   28.00%

Type the number of the ASP you want to move the disk units to in the New ASP column and press the Enter key. If you specify an ASP that does not currently exist on your system, the system creates a new ASP. If the move operation would leave the source ASP with insufficient storage, you receive an error message.
If you see the Confirm Move of Unit display, skip to step 6.

The Confirm Continuation display is shown if the storage management directories are not usable:
```
                               Confirm Continuation
   In order to proceed the system must perform internal processing that might 
take several minutes during which the system might appear inactive.   Press 
Enter to continue. Press F12=Cancel to return and change your choice.   
```
Determine whether you want to cancel the procedure or continue. If you want to continue, press the Enter key.

The Confirm Move of Unit display is shown:

                             Confirm Move of Unit
   Moving units will take several minutes.   Press Enter to confirm your 
choice to move the units. Press F9=Capacity information to display the capacity.
Press F12=Cancel to return to change your choice.
                Serial                   --Protected-- --Unprotected-- 
   ASP    Unit  Number      Type  Model   Size  %Used    Size  %Used
   1                                        0   0.00%    2062  83.00%
            1   00-0193825  6602   030
            2   00-0163477  6602   030
   2                                        0   0.00%    2062   0.01%
            3   00-0190494  6602   030
            4   00-17900    6602   030

Press F9 (Capacity information) to display the resulting capacity.

                               Resulting Capacity
   The configuration change that you requested would result in the following 
ASP capacities.   Press Enter to continue.
                   -----------Current----------  ----------Propose-----------
                   --Protected--  -Unprotected-  --Protected--  -Unprotected-
 ASP   Threshold    Size  %Used    Size  %Used    Size   %Used   Size   %Used
  1        90%        0   0.00%    4124 41.50%      0    0.00%   2062   83.00%
  2        90%                                      0    0.00%   2062    0.01%

Press the Enter key to return to the Confirm Move of Unit display.
Press the Enter key on the Confirm Move of Units display to move the selected disk units. The system will move the data off the selected disk units to the remaining disk units in the source ASP. The move can take several minutes during which the system appears inactive.
When the move operation is complete, you return to the Work with ASP Configuration display.
If you have no other tasks to perform, end DST.