SGI 2400 Manuel de service Page 21

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1
Chapter 1
1. Introducing the SGI 2400 and 2800 Server Systems
The SGI 2400 and 2800 rackmount servers provide a highly configurable system
architecture that is available in a single rackmount or multirack setup. Each rackmount
system consists of 2 to 16 CPUs, 64 MB to 32 GB of main memory and can provide a wide
variety of I/O interfaces (see Figure 1-1). The SGI 2400 server system uses up to four
racks (64 CPUs) but does not use a metarouter. The SGI 2800 multiple rack (or multirack)
metarouter configuration has up to 256 processors and up to 512 GB of main memory (see
Figure 1-2 and Figure 1-3).
System Features
The SGI 2400 or 2800 servers are ideal for evolving applications requiring expansion
capability as requirements grow. Some of the server’s features include:
significantly lower entry system costs (with pay-as-you-grow expandability)
support of a large number of processors (up to 256)
high bandwidth I/O connectivity
higher total memory capacity (up to 512 GB of main memory)
optional connectivity to third-party peripheral connector interface (PCI) boards
superscalar 64-bit CPUs (two on each Node board) support advanced memory
latency tolerance features such as out-of-order execution and advanced branch
prediction to address real-world application demands
large variety of peripheral connectivity options
XIO boards providing additional I/O, mass storage connections, and graphics
capabilities
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