NEC Express5800/120Rc-2, Руководство по обслуживанию, Страница: 19 / 194

System Overview 1-5
Power Supplies
The system contains one auto-sensing 330 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 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
Your server supports a variety of standard PC AT-compatible peripheral devices. The
chassis includes these peripheral bays:
!
A 3.5-inch front panel bay for mounting the standard 3.5" diskette drive
(supports 720 KB and 1.44 MB diskette media)
!
A standard CD-ROM drive bay
!
An optional 5.25-inch removable media front panel bay for mounting a half-
height 5.25-inch peripheral device such as an optional tape drives
!
Depending on your configuration, your server includes either four or five hot-
swap SCSI hard disk drive bays for mounting hard disk drives installed in easily
removable drive carriers.
Note:
The hot-swap SCSI hard disk drive bays contain a hot-
swap back plane that require an 80-pin single connector attachment
(SCA) connector on the drives that you install.