Silicon Graphics Rackable C1110-RP6, Руководство пользователя

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System Overview
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Figure 1-1
Four-Drive C1110-RP6 System Chassis Front View Example
Figure 1-2
Ten-Drive C1110-RP6 System Chassis Front View Example
Serverboard Features
The SGI Rackable C1110-RP6 system has a dual processor serverboard based on the Intel C602
chipset. The following subsections describe the main features of the serverboard. See Figure 1-3
on page 6 for a functional block diagram of the serverboard.
Processors
Each serverboard supports two Intel Xeon series processors. Each processor sits in an LGA2011
socket and is interconnected via Intel QPI link support, see the next subsection for more
information on the QPI bus. Four-core, six-core and eight-core processors are available.
The exact type of processors provided with your system depends on the specific configuration you
ordered. Check with your SGI sales or service representative for information on processor
upgrades.
Quick Path Interconnect (QPI)
Separate QPI link pairs connect the two processors in an 8.0-GT/s network on the serverboard.
Each QPI comprises two 20-lane point-to-point data links, one in each direction (full duplex), with
a separate clock pair in each direction, for a total of 42 signals. Each signal is a differential pair,
so the total number of pins is 84. The 20 data lanes are divided onto four “quadrants” of 5 lanes
each. The basic unit of transfer is the 80-bit “flit”, which is transferred in two clock cycles (four