Note: Do not IPL the system to get to DST.
b. Select the Work with disk units option.
c. Select the Display disk configuration option.
d. Select the Display non-configured units option.
Does the disk unit that you just exchanged appear as a non-configured unit
on the display?
Yes No
↓ It can take up to 5 minutes for the IOP to report the device to the
system. Wait a few minutes. Then, press F5 to refresh the display.
When the disk unit you just exchanged appears as a non-configured
unit on the display, continue with the next step of this procedure.
17. Format and initialize the disk unit by doing the following:
a. Select the Work with disk units option on the Service Tools display.
b. Select the Work with disk unit recovery option on the Work with Disk Units
display.
c. Select the Disk unit problem recovery procedures option on the Work with
Disk Unit Recovery display.
d. Select the Initialize and format disk unit option on the Disk Unit Problem
Recovery Procedures display.
e. On the display, select the disk unit you just installed.
f. Initialize and format the disk unit. When the new disk unit is initialized
and formatted, the display shows that the status is complete (this may take
30 minutes or longer).
18. Perform the following:
a. Return to the Work with Disk Unit Recovery display.
b. Select the Replace configured unit option on the Work with Disk Unit
Recovery display.
c. Select the configured disk unit that you are exchanging on the Select
Configured Unit to Replace display.
d. Select the replacement disk unit on the Select Replacement Unit display.
19. Return to the procedure that sent you here.
This ends the procedure.
20. You are at this step because the disk unit-concurrent repair procedures did not
work.
Is the failing disk unit a load source?
Yes No
↓ Go to step 23 of this procedure.
21. Is the disk unit that is mirrored to the failing disk unit also a local load
source?
No Yes
↓ Go to step 23 of this procedure.
22. You are at this step because all of the following are true:
v The local load source disk unit is failing.
v Concurrent maintenance procedures did not work.
v Remote load source protection started.
Data Recovery and General System Information
Chapter 6. Data Recovery Procedures and General System Information 901
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