
System Components
007-5806-004
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System Components
The SGI ICE X series system features the following major components:
•
42U D-rack.
This is a custom rack used for both the compute and I/O rack in the SGI ICE X
series. Up to two blade enclosure pairs can be installed in each rack. Note that multi-rack
systems will often have a dedicated I/O rack holding GigE switches, RLCs, Admin servers
and additional service nodes. Water-cooled D-racks are optionally available.
•
42U M-rack
. These multi-cell (M-Cell) rack assemblies use a dedicated cooling rack for
each two compute racks used. Water cooling of the individual nodes is accomplished by a
separate dedicated cooling-distribution rack (CDU). See “SGI ICE X M-Cell Rack
Assemblies” in Chapter 4 for additional information.
•
Blade enclosure pair.
This sheetmetal enclosure contains the two enclosures holding up to
36 compute blades, up to four chassis manager boards, up to four InfiniBand fabric I/O
blades and front-access power supplies for the SGI ICE X series computers. The enclosure
pair is 21U high. Figure 3-8 on page 48 shows the D-Rack version of the SGI ICE X series
blade enclosure pair system front components. The blade enclosure pair used in M-Cell
configurations employs side-mounted power supplies, see Figure 3-10 on page 50.
•
Fan (blower) enclosure (D-rack systems).
This sheetmetal enclosure is installed
back-to-back with each blade enclosure pair in a D-rack system. The fan enclosure consists
of two 6-blower enclosures and two dedicated power supplies. Figure 7-3 on page 99 shows
an example of the fan enclosure.
•
Single-wide compute blade.
Holds one or two node boards and up to 16 memory DIMMs.
See Figure 3-9 on page 49 for an example of blade number assignments.
•
1U RLC (rack leader controller).
One 1U rack leader server is required for each eight
CMCs in a system. High-availability configurations using redundant RLCs are supported.
•
1U Administrative server.
This server node supports an optional console and
administrative software.
•
1U Service node.
Additional 1U server(s) can be added to a system rack and used
specifically as an optional login, batch, MDS, OSS or other service node. Note that these
service functions cannot be incorporated as part of the system RLC or administration server.
•
2U Service node.
An optional 2U service node may be used as a login, batch, MDS, OSS or
fabric node. In smaller systems, multiple functions may be combined on one server.
PCIe options available may vary, check with your SGI sales or support representative.
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