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18 Chassis Description
Peripherals
The peripheral bay provides the interface for 3.5-inch and 5.25-inch media.
3.5-inch Diskette Drive
The 3.5-inch diskette drive in the peripheral bay supports 720 KB and 1.44 MB media. The drive
is externally accessible from the front of the system.
3.5-inch Hard Drive Bays
The peripheral bay contains two hot-swapping bays for two 3.5-inch wide (1.0-inch high or
1.6-inch high) wide/fast-20 SCSI III SCA-type hard drives. The hard drives are externally
accessible at the front of the system and connect to a wide LVDS hot-swap SCSI backplane.
As part of the hot-swap implementation, a drive carrier with an integral heatsink is required. The
drives are mounted in the carrier with four fasteners and the carrier snaps into the chassis with a
locking handle. A single metal EMI shield and plastic door cover the drive bays. A hot-swapping
bay is provided for drives that are 3.5 inches wide and 1.0 or 1.6 inches high. Drives can consume
up to 24 watts of power and must be specified to run at a maximum ambient temperature of
40 °C (104 °F).
5.25-inch Removable Media Device Bay
The peripheral bay has one 5.25-inch half-height bay that is accessible from the front of the
system. This bay is intended to provide space for a tape drive for backup or for another removable
device.
We recommend that you do not use this bay for a hard disk drive, because hard disk drives
generate EMI (increasing ESD susceptibility), and because of inadequate cooling.