What to do if ...

In this chapter you are told how the Server Unit informs you about hardware faults and how you perform a system dump when inexplicable system downtime occurs.

In the event of hardware faults the operating system will take the necessary recovery action autonomously. Customer Service is automatically informed by means of a Service Call and initiates repair measures, possibly in conjunction with the customer.

Indicators when a hardware fault occurs

The server informs you of hardware faults in the following manner:

• On the server's control panel

  When the yellow CHECK lamp lights up, this can signal a hardware fault. At the same time the status indicator displays the FLAG code. This can mean a fault in the service processor or a hardware malfunction.

• In the SVP console window

  On the SVP console, indicators in row 24 of the SVP frame can signal a hardware fault. Evaluation of the FLAG code is reserved for Customer Support. The figure below shows the format of the display:

  

  Figure 52: Status display in rows 24 and 25 of the SVP console

  FLAG code FF . . . FF can have different meanings and consequently require different responses:

  • A WRITE-CONSOLE message has been displayed. This can be deleted with . This does not delete the FLAG code indicator.

  • A warning has been displayed, e.g. when the room temperature is too high. The cause of the fault must be rectified. System operation can continue in the meantime.

  • A fault which has automatically been corrected by the hardware occurred on the server or at the interface to the peripheral devices. In this case, too, system operation can continue.

  • A fault has occurred which does not permit system operation to continue. In this case you can respond as follows:

    When system downtime occurs, perform an IMPL. If this does not rectify the fault, notify Customer Support and discuss how to proceed further.

Performing a system dump

Requirement:

SVP console opened and ready

1. Select (LD) PROGRAM LOAD FRAME

2. Select LOAD FUNCTION => 5 (SYSTEM DUMP)

The memory dump stored by the DUMP program to disk or tape is required for error diagnosis.

The BS2000/VM2000 system must subsequently be reloaded by means of IPL.

Information on SLED operation is provided in the "Introduction to System Administration" manual [8].