IBM iSeries 270 Service Manual page 567

v If the disk unit you exchanged is in ASP 1, have the customer see the Backup and Recovery
information. You must restore the operating system (OS/400 Licensed Program) and all customer
data.
v If the disk unit is in a user ASP (ASP 2 through ASP 16), data in the ASP is lost. See the Backup
and Recovery information.
This ends the procedure.
17. Is the failing unit missing from the configuration?
v No: Find another disk unit on the system, other than the load-source disk unit. Continue with the
next step.
v Yes: Go to step 26 (See page 556).
18. Perform the following to install a new disk unit on the system:
a. Power off the system. Slide the disk unit that you found in the previous step of this procedure out
of the system. (See "Remove and replace procedures" on page 2.)
b. Be very careful with the disk unit. You will install it again when the repair actions to the failing disk
unit are complete.
c. Install the new disk unit.
19. Perform an IPL to DST. (See Dedicated Service Tools (DST) in the iSeries Service Functions
information.)
Does the Use Dedicated Service Tools (DST) display appear?
v Yes: Continue with the next step.
v No: Repeat step 1 (See page 552).
20. Perform the following to format and initialize the disk drive you installed in step 18 (See page 555).
a. From the Use Dedicated Service Tools (DST) display, select Work with disk units—>Work with
disk unit recovery—>Disk unit problem recovery procedures—>Initialize and format disk
unit.
b. Select the nonconfigured disk unit that you installed in step 18 (See page 555) as the unit to work
with.
c. Press F10 to verify the initialization and formatting. The initialization and formatting may take 30
minutes or longer to complete.
d. Return to the Work with Disk Unit Recovery display.
21. Perform the following to copy data from the failing disk drive to the disk drive you installed in step 18
(See page 555).
a. Select Copy disk unit data on the Work with Disk Unit Recovery display.
b. Select the failing unit as the unit to copy.
c. Select the nonconfigured unit that you installed in step 18 (See page 555) as the unit to copy to.
d. The console displays the percentage of the data copied. Write down the number of unreadable
pages if it displays; you will use it later in this procedure.
e. Wait until the status of the copy is Complete. Customer data is not recoverable if one of the
following occurs:
v The copy operation does not complete.
v A large number of unreadable pages must be copied from the disk unit.
Continue with the next step.
22. Perform the following to remove the failing disk unit from the system:
a. Power off the system.
b. Find the failing disk unit. Slide the disk unit out of the system.
23. Perform the following to move the new disk unit into the location that held the failing disk unit:
Analyze hardware problems
555