M-Cell Functional Overview; Table 4-2 Sgi Ice X M-Rack Technical Specifications - Silicon Graphics ICE X User Manual

M-Cell Functional Overview

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An M-Cell consists of M-racks and cooling racks and in most configurations a special cooling
distribution rack (CDU). When liquid-cooled blades are used in the system, the separate CDU
supplies water that dissipates heat off the system CPUs.
There is one 24-inch wide x 93-inch high cooling rack for every two M-racks in an M-Cell. The
cooling rack circulates conditioned air through the M-racks to cool the components within the
M-rack assembly. Figure 4-6 on page 64 shows the cooling rack at the center of the array with the
SGI logo on the front. Note that the cooling rack does not accommodate any compute or storage
components and is used strictly for cooling the M-Cell assembly.
The compute racks used in an M-Cell configuration are 33-inches (83.8 cm) wide; other size and
weight differences (compared to the D-Rack) are noted in Table 4-2. In the M-rack there are six
power shelves per blade enclosure pair.
Table 4-2
SGI ICE X M-Rack Technical Specifications
Characteristic
Height
Width
Depth
Weight (full)
Shipping weight (max)
Voltage range
Nominal
Tolerance range
Frequency
Nominal
Tolerance range
Phase required
Power requirements (max) 76 kVA (77.47 kW)
Hold time
Power cable
Specification
93 in. (236.2 cm)
33 in. (83.8 cm)
48.4 in. (121.9 cm)
~2,426 lbs. (1,103 kg) approximate
~2,850 lbs. (1,295 kg) approximate
North America/International
200-240 VAC /230 VAC
180-264 VAC /180-254 VAC
North America/International
60 Hz / 50 Hz
47-63 Hz / 47-63
single-phase or optional 3-phase
20 ms
10 ft. (3.0 m) pluggable cords
SGI ICE X M-Cell Rack Assemblies
63