IBM Application System/400 Service Information page 143

b. Select the Work with disk unit recovery
option from the Work with Disk Units
display.
c. Select the Save disk unit data option
from the Work with Disk Unit Recovery
display.
d. Select the disk unit that you want the
data saved from on the Select Disk Unit
Data to Save display.
If the disk unit is missing, you cannot
save the customer data to tape at this
time. Go to step 5 of this procedure.
e. Install a tape in the tape unit.
f. The Specify Volume Identifier prompt
appears. Enter the volume identifier for
the tape. Write down the tape volume
identifier here . You will
use the tape volume identifier later in
this procedure.
g. The Select Tape or Diskette Unit
prompt appears.
Select the tape unit that you loaded
with a tape.
Note: If the tape volume identifier that
you keyed in does not match the tape
volume identifier written on the tape,
the Device Intervention Required
prompt appears. The message 'Wrong
volume loaded" appears at the bottom
of the display. The tape volume identi-
fier written on the tape is shown in the
'Volume or file loaded" field. Press the
Enter key. The Handle Tape or
Diskette Intervention prompt appears.
Select the Format option and press the
Enter key to continue the save opera-
tion.
h. If the Check for Device Intervention
Required display appears, press the
Enter key to continue.
i. If the Handle Tape or Diskette Inter-
vention display appears, select the
Format the tape option.
The Save Disk Unit Data display
appears. This display shows the
percent of disk data saved.
j. After the tape is full, the Handle Tape
or Diskette Intervention display
appears.
1) Insert the next tape into the tape
unit.
2) Enter the option to continue saving
data to the tape you just inserted.
k. Continue saving the customer's data to
tapes until the Save Disk Unit Data
display shows that the status of the
save is complete.
If the save operation does not complete or
if there are large numbers of unreadable
sectors on the disk unit being saved, the
customer's data is not recoverable.
5
Perform the following:
a. Power off the system (see "Power off"
on page 5-2).
b. Exchange the failing disk unit (see
"Disk Unit" on page 4-7).
6
Did you exchanged disk unit 1 in the
system unit?
No
Yes
Go to step 10 of this procedure.
7
Format and initialize the new disk unit by
doing the following:
a. Perform an IPL by doing step 2 of this
procedure.
Note: The Missing Disk Units display
appears on the console. This indicates
that a configured disk unit was
removed.
b. Select the Work with disk units option
from the Use Dedicated Service Tools
(DST) display.
c. Select the Work with disk unit recovery
option from the Work with Disk Unit
display.
d. Select the Disk unit problem recovery
procedures option from the Work with
Disk Unit Recovery display.
e. Select the disk unit on the display that
is not configured.
f. Select the Initialize and format disk unit
option from the Disk Unit Problem
Recovery Procedures display. When
the new disk unit is initialized and for-
matted, the display shows that the
status is complete (this may take 30
minutes or longer).
g. Press the Enter key.
Chapter 5. Service Referenced Procedures
5-7