IBM iSeries 270 Service Manual page 555

– For system models 830, 840, SB2, and SB3, this disk unit must be located in position D31, D32,
D33, or D34.
Secondary partition:
– See Locating a Secondary Partition's Load Source From the Primary Partition's Console in the
iSeries Service Functions
information.
v Remote load source: A load source disk unit that is not a local load source.
1. Display the disk unit status by performing the following:
a. Select System Service Tools (SST).
If you cannot get to SST, select Dedicated Service Tools (DST) (see Dedicated Service Tools
(DST) in the iSeries Service Functions
).
Notes:
v If the customer is running applications on the system, do not power off the system or IPL the
system to get to DST.
v If you cannot get to SST or DST, and the system fails during the IPL to DST, the local load
source disk unit may be in the wrong location or in a failed state. SRC B1xx4504 is displayed
during the IPL to DST if a functional load source disk unit is failing or not in one of the positions
indicated by the local load source definition above.
Systems that have remote load source mirror protection can be recovered by using the steps in
"Recover remote load source" on page 557. If you do know if this system has remote load
source mirror protection, contact your next level of support.
b. From the Service Tools display, select Work with disk units—>Display disk
configuration—>Display disk configuration status.
Does the failing disk unit have a status of "Suspended"?
v Yes: Go to step 8 (See page 544).
v No: Continue with the next step.
2. Does the disk unit that is mirrored to the failing disk unit have a status of "Suspended"?
v No: Go to step 7 (See page 544).
v Yes: Continue with the next step.
3. Is the failing disk unit the load source (disk unit 1)?
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).
To save the data by copying to tape, go to Save data and initialize disk unit.
To save the data by copying to another disk, go to Initialize disk unit and copy to disk.
4. Is the failing load source disk unit a local load source?
v No: Continue with the next step.
v Yes: 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).
To save the data by copying to tape, go to Save data and initialize disk unit.
To save the data by copying to another disk, go to Initialize disk unit and copy to disk.
5. Perform the following to attempt to repair the local load source. Doing this procedure reduces the
duration of the repair time.
Analyze hardware problems
543