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Cells (CPUs and Memory)
Cells (CPUs and Memory)Cells (CPUs and Memory)
Cells (CPUs and Memory)
A cell, or cell board, is the basic building block of a Superdome system. It is a symmetric multi-processor (SMP),
containing:
Four sockets that can hold PA-8600, PA-8700 or PA-8800 processors (only one type is allowed per cell)
Memory (up to 16-GB RAM with 512-MB DIMMs, 32-GB RAM with 1-GB DIMMs and 64-GB with 2-GB DIMMs.
NOTE:
NOTE: NOTE:
NOTE:
1-GB and 2 -GB DIMMs are only supported with Superdome PA 8800
)
One cell controller (CC)
Power converters
Data buses
Optional link to I/O card cage
Please note the following:
PA-8600 and PA-8700 processors can be mixed within a Superdome system, but must reside on different cells and
in different partitions. PA-8800 processors cannot be mixed within a Superdome system with PA-8600 or PA-8700
processors.
A Superdome PA-8800 system can support up to 1 TB of memory with 2 GB DIMMs. However, due to the limitation
of HP-UX 11i, the maximum amount of memory supported in a partition is 512 GB.
For PA-8600 and PA-8700 processors: The minimum configuration includes one active CPU and 2 GB memory per
cell board. The maximum configuration includes four active CPU and 16 GB memory per cell board. Each cell
board ships with four PA-8600 or PA-8700 CPUs. However, based on the number of active CPUs ordered, from one
through four CPUs are activated prior to shipment.
For PA-8800 processors: The minimum configuration includes four active processors and 2 GB memory per cell
board. The maximum configuration includes 8 active processors and 64 GB memory per cell board using 2-GB
DIMMs. Each cell board ships with either four or eight PA-8800 CPUs. The minimum number of active processors
on each cell board is 4. Additional processors on the cell board can be activated individually (not in pairs).
512-MB, 1-GB and 2-GB (future) DIMMs can be mixed on a cell board in Superdome PA-8800 systems only.
Crossbar Backplane
Crossbar BackplaneCrossbar Backplane
Crossbar Backplane
Each Crossbar backplane contains two sets of two crossbar chips that provide a non blocking connection between eight
cells and the other backplane. Each backplane cabinet can support up to eight resulting in a Superdome PA-8600 or
Superdome PA-8700 32-way or Superdome PA-8800 64-way system. A backplane supporting four cells would result in a
Superdome PA-8600 or Superdome PA-8700 16-way and a Superdome PA-8800 32-way system. Two backplanes can be
linked together with flex cables to produce a cabinet that can support up to 16 cells resulting in a Superdome PA-8600 or
Superdome PA-8700 64-way or Superdome PA-8800 128-way system.
QuickSpecs
HP 9000 Superdome Servers
HP 9000 Superdome ServersHP 9000 Superdome Servers
HP 9000 Superdome Servers
(PA-8600, PA-8700 and PA-8800)
(PA-8600, PA-8700 and PA-8800)(PA-8600, PA-8700 and PA-8800)
(PA-8600, PA-8700 and PA-8800)
Configuration
DA - 11721 North America — Version 13 — April 1, 2005
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