Fujitsu M200 Computer Hardware User Manual


 
10.2 Device Configuration
10.2 Device Configuration
This file unit consists of the following components.
Rack mount cabinet
Basic power supply and expansion option power supply (for redundant configuration)
DC-DC converter
Cooling fans (redundant configuration)
SCSI-BP boards
Interface board
Hot-swappable disk drives
Disk configuration
The Expansion File Unit has 2 UltraSCSI buses. Up to 5 drive units can be installed in the half
portion of the cabinet as indicated in Figure 10.2 . Internally, they are connected to an interface
board by a single-ended UltraSCSI bus. And, up to 5 drive units can be installed another half
portion of the cabinet. Also, they are connected to an interface board by a single-ended UltraSCSI
bus. The interface board has a single-ended to differential interface converter in it, and each
interface board is connected to the host by a differential UltraSCSI bus.
Each interface board has a POWER LED. If a FAULT LED and an ACTIVE LED of a disk bay that
has a disk drive doesn’t light up, check the POWER LED on the interface board in the cage if it is
light up or not. A failed unit can be isolated by checking this POWER LED, a ACTIVE LED, a
FAULT LED, and a POWER LED on the power supply unit.
#1 #2 #3 #4 #5 #1 #2 #3 #4 #5
ACTIVE LED (Green)
FAULT LED (Amber)
POWER LED (Green)
Interface Board (Standard)
Interface Board (Option)
Figure 10.2 Drive Bays of Expansion File Unit
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