1-16 System Overview
! Controls secure mode, including video blanking, diskette write-protect
monitoring, and front panel lock/unlock initiation
! Controls Wake On LAN via Magic Packet support.
Power Supplies
The system contains one auto-sensing 450-watt power supply at an operating frequency
of 50/60 Hz.
A second optional power supply may be added as part of a fault-tolerant hot-swap
design. With two power supplies installed, in the unlikely event of a power supply
failure, the load is transferred to the remaining power supply without interruption to
normal operation. In this case the faulty power supply can be replaced without
powering down the system.
NOTE: The power supplies are not hot-swappable unless there are two power
supplies installed.
The power supplies are designed to comply with existing emission standards and
provide sufficient power for a fully loaded system configuration.
Peripheral Bays
The system supports a variety of standard PC AT-compatible peripheral devices. The
chassis includes these peripheral bays:
! A 3.5-inch front panel bay for installing the standard 3.5-inch floppy disk drive
(supports 720KB and 1.44MB floppy disk media)
! Four 5.25-inch device bays for installing half-height or full-height 5.25-inch
peripheral devices such as an optional tape drives.
! The SCSI hard disk drive bays for installing up to six SCSI hard disk drives.
The SCSI disk drives can be easily installed or removed. The drive carrier allows you
to access to disk drives from the front of the system. If disk drives are provided with
RAID configuration within the system, a disk drive can be swapped with another
without power interruption in the system (hot-swap).
NOTE: The SCSI hard disk drive bays contain a hot-swap back plane th at
require an 80-pin single connector attachment (SCA) connector on the drives that
you install.