IBM iSeries 270 Service Manual page 557

Note: It can take up to 5 minutes for the IOP to report the device to the system. If the disk unit you
just exchanged does not appear as a non-configured unit on the display, 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.
10. Format and initialize the disk unit by doing the following:
a. From the Service Tools display, select Work with disk units—>Work with disk unit
recovery—>Disk unit problem recovery procedures—>Initialize and format disk unit.
b. On the display, select the disk unit that you just installed.
c. 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).
11. Perform the following:
a. Return to the Work with Disk Unit Recovery display and select Replace configured unit.
b. On the Select Configured Unit to Replace display, select the configured disk unit to exchange.
c. On the Select Replacement Unit display, select the replacement disk unit. Return to the procedure
that sent you here.
This ends the procedure.
12. Is the failing disk unit a load source?
v No: Go to step 14 (See page 545).
v Yes: Continue with the next step.
13. Is the disk unit that is mirrored to the failing disk unit also a local load source?
v Yes: Continue with the next step.
v No: Ask the customer to end all applications that are running on the system and power the system
off with the Power Down System command (PWRDWNSYS). Then go to "Recover remote load source"
on page 557.
This ends the procedure.
14. Ask the customer to end all applications that are running on the system and power the system off
with the Power Down System command (PWRDWNSYS). Then, exchange the failing disk unit. (See
"Remove and replace procedures" on page 2.) Continue with the next step.
15. Perform an IPL to DST. (See Performing an IPL to DST in the iSeries Service Functions
information.)
16. Format and initialize the disk unit by doing the following:
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. On the display, select the disk unit that you just installed.
c. 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).
17. Perform the following:
a. Select the Replace configured unit option on the Work with Disk Unit Recovery display.
b. On the Select Configured Unit to Replace display, select the configured disk unit to exchange.
c. On the Select Replacement Unit display, select the replacement disk unit.
18. Perform the following:
a. Return to the Use Dedicated Service Tools (DST) display.
b. Select Perform an IPL to complete the IPL. The system copies data to the new disk unit during
the IPL.
Analyze hardware problems
545