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2.2 Device Configuration
Fans Table 2.1 lists the fans installed in the M200 main cabinet.
Table 2.1 Fans
Name Shape
Fan #0 120-mm (4.7 inch) square fan
Fan #1 120-mm (4.7 inch) square fan
Fan #2 92-mm (3.6 inch) square fan
Fan #3 80-mm (3.1 inch) or 120-mm
(4.7 inch) square fan (*1)
Fan #4 92-mm (3.6 inch) square fan
Location
Behind the Systemboard
Under the disk unit
Above the processor module
Behind the power supply
Side the PCI slot
*1 The 80-mm square fan is replaced by the 120-mm square fan when the expansion
power supply is installed.
Power supplies
The M200 main cabinet has a basic power supply unit as well as DDC(DC-DC Converter)s
dedicated to each processor module. When the Disk Expansion Unit is installed, The expansion
power supply is required (when 5 to 8 disks are installed in the M200 main cabinet).
If the expansion power supply is not installed when the Disk Expansion Unit is installed, an
indication that a mounting rule has been violated is reported on the LCD panel and power-on is
inhibited. This checking function prevents faulty configurations. The checking function is executed
when a disk cage is expanded regardless of whether a disk unit is installed.
The alarm detection feature is not implemented for the expansion power supply of the M200 main
cabinet. If a failure occurs in the expansion power supply, the power cannot be supplied to the Disk
Expansion Unit. In this case, the POWER LED on the disk expansion cage turns off. If an error
occurs in the disk unit installed in the Disk Expansion Unit (because the power is not supplied), the
expansion power supply may be at failed. Check the POWER LED on the expansion disk cage.
Stabilizing feet
The stabilizing feet prevent the M200 main cabinet from falling over when it is pushed from its side
or if there is an earthquake. When installing the M200 main cabinet, be sure to install the stabilizing
feet.
Rear of the M200 main cabinet
AC input, AC main line switch, power supply(FEP) and some connectors are located on the rear
panel of the M200 main cabinet as shown in the Figure 2.3 .
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