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4: Rack Information
SGI ICE X M-Cell Rack Assemblies
Specific SGI ICE X system configurations require the use of enhanced “closed-loop” cooling and
the compute rack assemblies are generally referred to as an “M-Cell”. A complete M-Cell
assembly consists of four compute racks and two cooling racks, see Figure 4-5 for an example.
The racks are connected together to create a sealed unit to support closed-loop cooling. One
innovative difference in an M-Cell rack system is that it does not exhaust heated air into the
surrounding environment; this means an M-Cell does not add to the heat load of the computer
room. Multiple M-Cells can be interconnected and configured to create very large systems. Most
M-Cell configurations also require the use of a separate cooling distribution rack unit (CDU rack)
not shown in Figure 4-5.
Figure 4-5
M-Cell Rack Configuration Example (Top View)
The smallest M-Cell assembly consists of two compute racks with a cooling rack in between. This
smaller unit is often referred to as a “½-Cell” rack assembly or simply a “half-cell”. See Figure 4-7
on page 65 for an example.
Summary of Contents for ICE X
Page 1: ...SGI ICE X System Hardware User Guide Document Number 007 5806 004 ...
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Page 27: ...Powering the System On and Off 007 5806 004 7 Figure 1 5 Three Phase PDU Examples ...
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Page 78: ...58 007 5806 004 4 Rack Information Figure 4 2 Front Lock on Tall 42U D Rack ...
Page 80: ...60 007 5806 004 4 Rack Information Figure 4 4 Air Cooled D Rack Rear Door and Lock Example ...
Page 84: ...64 007 5806 004 4 Rack Information Figure 4 6 SGI ICE X Multi Cell M Cell Rack Array Example ...
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