a. Power off the system.
b. Exchange the storage IOA (see “Chapter 4. Removal and
Installation Procedures” on page 617). If you do not know the part
number, see “Type, Model, and Part Number list” on page 885.
c. Perform an IPL to dedicated service tools (DST) (see “Dedicated
Service Tools (DST)” in the iSeries Service Functions information). If
the same SRC occurs, go to step 6 of this procedure. If a different
SRC occurs, use it to correct the problem (see “Chapter 2. Unit
Reference Codes” on page 59). If no SRC occurs, then the problem
was solved by exchanging the IOA.
This ends the procedure.
6. Perform the following:
a. Power off the system.
b. Exchange the failing disk unit (see “Chapter 4. Removal and Installation
Procedures” on page 617).
7. Did you just exchange disk unit 1 in the system unit?
No Yes
↓ Go to step 11 of this procedure.
8. Format and initialize the new disk unit by doing the following:
a. Perform an IPL to DST (see “Dedicated Service Tools (DST)” in the iSeries
Service Functions information).
If any messages regarding missing disk units appear, ignore the message.
b. Select the Work with disk units option on the Use Dedicated Service Tools
(DST) display.
c. Select the Work with disk unit recovery option on the Work with Disk Unit
display.
d. Select the Disk unit problem recovery procedures option on the Work with
Disk Unit Recovery display.
e. Select the Initialize and format disk unit option on the Disk Unit Problem
Recovery Procedures display.
f. Select the disk unit on the display to initialize and format.
g. Press the F10 key on the confirmation display.
h. The system format and initializes the new disk unit. The display shows
when the status is complete (this may take 30 minutes or longer).
9. Is most of the customer data recoverable (see step 3 of this procedure)?
Yes No
↓ Go to step 18 of this procedure.
10. Restore the customer data from the tape to the new disk unit by doing the
following:
a. Return to the Work With Disk Unit Recovery display.
b. Select the Restore disk unit data option from the Work with Disk Unit
Recovery display.
c. Enter the tape volume identifier. This is the volume identifier that you
entered during the save procedure.
d. Install the first tape that the data was saved to in the tape unit.
e. Select the tape unit that you want the data restored from on the Select
Tape Unit display.
Data Recovery and General System Information
Chapter 6. Data Recovery Procedures and General System Information 905
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