NonStop S-Series Operations Guide (G06.24+)

Processors: Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-007
11-17
Dumping a Processor to Tape (Down System Only)
Dumping a Processor to Tape (Down System Only)
If the entire system is down (all processors are halted), you can perform a tape dump
using the OSM or TSM Low-Level Link. Your service provider can use the memory
dump to troubleshoot your system. For more information on determining processor
problems, see Monitoring Processor Status Using OSM or TSM on page 11-2.
You dump processor memory to disk or tape, depending on the following
circumstances:
•
When the server is running, dump processor memory to disk using the TACL
RECEIVEDUMP utility. The server is running when any processor is executing the
NonStop Kernel operating system.
•
When the entire system is down (all processors halted) dump processor memory to
tape. You can use the OSM or TSM Low-Level Link to dump processor memory to
tape. You can perform this action either before or after system discovery.
The tape dump is performed over either the X or Y ServerNet fabric. Status messages
in the Processor Status dialog box of the OSM or TSM Low-Level Link indicate the
progress of the tape dump. When the tape dump finishes successfully, halt code
%1154 appears in the Processor Status dialog box for the processor that was dumped
to tape.
Alerts
Before performing a tape dump:
•
The G03.00 and subsequent G-series RVUs support tape dumps only on down
systems. All processors in the system must be halted.
•
A tape drive must be connected to a PMF CRU in group 01. Tape drives connected
through a ServerNet/DA or to any other PMF CRUs or IOMF CRUs cannot be used
for tape dumps.
•
Make sure the tape is at the load point. If a tape dump is attempted and the tape is
not at the load point, the cause of failure is not indicated.
•
Troubleshooting and Recovery Operations for Tape Dumps on page 11-21 lists the
common errors that could occur during tape dumps and the corresponding
recovery actions.
Caution. The OSM or TSM Low-Level Link does not let you perform a tape dump while the
server is running. When the server is running, you need to use the TACL RECEIVEDUMP
utility to dump the processor to disk.
Note. If the processor is not already halted, you must halt it before dumping its memory.