NonStop NS14000 Planning Guide (H06.10+)

In summary, these terms describe the NSAA processor:
DescriptionTerm
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)
Two or four PEs contained within a single NonStop Blade
Element enclosure.
NonStop Blade Element
One or more PEs from each NonStop Blade Element
executing a single instruction stream. A duplex processor
has two PEs forming a logical processor. A triplex
processor has three PEs.
Logical processor
Two NonStop Blade Elements (duplex processor) or three
NonStop Blade Elements (triplex processor). An Integrity
NonStop NS14000 system includes up to two NonStop
Blade Complexes.
NonStop Blade Complex
The power, processor, memory, and I/O hardware for a
complete NonStop Blade Element. It mounts in a 19-inch
modular cabinet.
NonStop Blade Element enclosure
Processor Element
Each of the two or four processor elements in a NonStop Blade Element includes:
• A standard Intel Itanium microprocessor running at 1.5 GHz with a 4-MB cache
• 4 GB or 8 GB of main memory partitioned from DDR SDRAM DIMMs
• I/O interface with maintenance logic shared with the other PEs in the NonStop Blade Element
• Interface for fiber-optic I/O communications with the corresponding LSU
• Memory reintegration logic and fiber-optic links shared with the other PEs in the NonStop
Blade Element and used for memory rendezvous between the NonStop Blade Elements
This diagram provides an overview of the processor element architecture:
Duplex Processor
The DMR or duplex processor uses two NonStop Blade Elements, A and B, both with two or
four microprocessors. Fiber-optic cables from each NonStop Blade Element connect the PEs to
the LSUs. These LSUs then connect to two independent ServerNet fabrics via the VIO enclosures.
These connections create communications redundancy in case one of the fabrics fails. For a
description of the LSU functions, see “Processor Synchronization and Rendezvous” (page 39).
A duplex processor includes these elements:
Processor Element 37