HP NonStop NS manual Recovery Operations for Processors, Recovery Operations for a Processor Halt

Processors and Components: Monitoring and	Recovery Operations for Processors
Recovery

Recovery Operations for Processors

The architecture of Integrity NonStop NS-series servers offers recovery options not available in NonStop S-series. Because a logical processor has a physical processor element (PE) in each of up to three NonStop Blade Elements, in some cases, you no longer have to choose between taking the time to dump entire processors and skipping the dump to reload the system as quickly as possible. In those cases, you can reload a halted processor immediately, while excluding the PE for one Blade Element, then dump that excluded PE before reintegrating the Blade Element into the running processor.

Note. The parts of this section that do not apply to Integrity NonStop NS1000 systems include all references to processor elements (PEs) the RELOAD command OMITBLADE option. For more information on Integrity NonStop NS1000 systems, see Differences Between Integrity NonStop NS-Series Systems on page 2-2,the NonStop NS1000 Planning Guide, or the NonStop NS1000 Hardware Installation Manual.

Processor recovery operations for your NS-series system might include:

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Recovery Operations for a Processor Halt on page 9-9Halting One or More Processors on page 9-10

Reloading a Single Processor on a Running Server on page 9-10Recovery Operations for a System Hang on page 9-14Enabling/Disabling Processor and System Freeze on page 9-15Freezing the System and Freeze-Enabled Processors on page 9-15Dumping a Processor to Disk on page 9-15

Backing Up a Processor Dump to Tape on page 9-19Replacing Processor Memory on page 9-19

Replacing the Processor Board and Processor Entity on page 9-19Submitting Information to Your Service Provider on page 9-19

Recovery Operations for a Processor Halt

HP Tandem Failure Data System (TFDS) should be used to proactively monitor processors and manage processor halts. Configured and running before a halt occurs, TFDS can help determine and perform the type of recovery operation needed (see Monitoring Processors Automatically Using TFDS on page 9-4). For information on configuring and using TFDS, see the Tandem Failure Data System (TFDS) Manual.

If all processors have halted (the system is down), TFDS cannot perform an automatic dump or reload. You must load the system, as described in Performing a System Load From a Specific Processor on page 15-11.You can omit one Blade Element from the load operation, to dump after the system is running. You can also dump the remaining processors as needed—dump the entire processor before reloading, or reload and omit Blade Element to dump later. For more information, see Dumping a Processor to Disk on page 9-15.

HP Integrity NonStop NS-Series Operations Guide—529869-005

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