NonStop NS-Series Operations Guide (H06.12+)

In summary, these terms describe the NSAA processor:
DescriptionTerm
Consists of two Blade Elements (in a duplex system) or
three Blade Elements (in a triplex system) and up to four
logical processors and their associated LSUs. An Integrity
NonStop system includes up to four Blade Complexes.
Blade Complex
Consists of a chassis, processor board containing two or
four PEs (one representing each logical processor in the
Blade Complex), memory, I/O interface board, midplane,
optics adapters, fans, and power supplies. Blade Elements
are mounted in a 19-inch computer equipment rack.
Blade Element
A single Itanium microprocessor with its associated
memory. A PE is capable of executing an individual
instruction stream and I/O communication through
fiber-optic links.
Processor element (PE)
One PE from each Blade Element executing a single
instruction stream. A duplex system has two PEs forming
a logical processor. A triplex system has three PEs.
Logical processor
Monitoring and Maintaining Processors
To monitor processors, use OSM, the ViewSys product, and other tools. Monitoring and
maintaining processors includes:
• “Monitoring Processors Automatically Using TFDS” (page 106)
• “Monitoring Processor Status Using the OSM Low-Level Link” (page 106)
• “Monitoring Processor Status Using the OSM Service Connection” (page 107)
• “Monitoring Processor Performance Using ViewSys” (page 108)
• Monitoring EMS Event Messages on page 4-1
Monitoring Processors Automatically Using TFDS
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
the type of recovery operation needed and:
• If TFDS determines that the entire processor should be dumped be reloading, it automatically
dumps, then reloads the processor.
• If TFDS determines that only the processor element (PE) for one Blade Element needs to be
dumped, it reloads the processor, excluding that Blade Element, dumps the Blade Element,
then reintegrates it back into the running processor.
• Collects the files necessary to analyze the problem.
• Sends halt information message to the EMS collector. If configured in OSM, a dial-out
message is sent to HP Global Support to notify them of the halt.
For more information on configuring and using TFDS, see the Tandem Failure Data System (TFDS)
Manual.
Monitoring Processor Status Using the OSM Low-Level Link
From the OSM Low-Level Link, use the Processor Status dialog box to determine if the processors
are running:
1. Log on to the OSM Low-Level Link.
2. On the toolbar, click the Processor Status button.
106 Processors and Components: Monitoring and Recovery