Use this procedure to isolate a system STARTUP failure in the initial program load (IPL) mode.
Disk units are missing from the disk configuration.
Data from the control panel can be used to find information about the missing disk unit. See System Reference Code (SRC) information for details.
Some disk units are unprotected but configured into a mirrored ASP. These units were originally DPY, RAID-5, or RAID-6 protected but protection was disabled.
Perform the following:
There is a problem with a disk unit subsystem. As a result, there are missing disk units in the system.
Perform the following:
The system disk capacity has been exceeded.
For more information about disk capacity, see iSeries® Handbook, GA19-5486-20.
The disk configuration has changed.
The operating system must be installed again, and all customer data must be restored.
The operation to write the vital product data (VPD) to the control panel failed.
Exchange the multiple function I/O processor card. See Finding part locations for the model you are working on for the location of the card and a link to the remove and replace procedure.
One or more disk units were formatted incorrectly.
The system will continue to operate normally. However, it will not operate at optimum performance. To repair the problem, perform the following:
The load-source disk unit data is down-level.
The load-source disk unit is mirror protected. The system is using the load-source disk unit that does not have the current level of data.
The disk units that are needed to update the system configuration are missing.
Perform an IPL by doing the following:
Licensed Internal Code was installed on the wrong disk unit of the load-source mirrored pair.
The system performed an IPL on a load source that may not contain the same level of Licensed Internal Code that was installed on the other load source. The type, model, and address of the active device are displayed in words 4-7 of the SRC.
A problem was detected with the installation of Licensed Internal Code service displays. The cause may be defective media, the installation media being removed too early, a device problem or a Licensed Internal Code problem.
Insufficient main storage capacity.
There is not enough main storage capacity. For details about how much more capacity is required, see the "Insufficient Main Storage Capacity" screen, which is displayed when the system is IPLed in manual mode. Typically, this error occurs when you have moved memory between logical partitions, and one partition no longer has a sufficient amount of main storage.
Data from a User ASP has overflowed into the System ASP (ASP 1). There is not enough free space in the User ASP to move the overflowed data from the System ASP back into the User ASP. The system will continue to run in this condition, but if a disk failure in the System ASP causes the System ASP to be cleared, the data in the User ASP will also be cleared out.
You should delete some files or objects from the User ASP so that enough free space exists in the User ASP to allow the data that is overflowed into the System ASP to be moved back.