Power Supply; Peripheral Bays; Saf-Te Logic - NEC EXPRESS5800/120Lf User Manual

Power Supply

Your server may be configured with one power factor correction (PFC) 300-Watt power
supply for non-redundant non-hot-swap systems or two 350-Watt thin power supply
units for redundant hot-swap systems.
Each power supply unit has auto-ranging inputs that select 100 – 120 Vac or
200 – 240 Vac at an operating frequency of 50/60 Hz. It is designed to comply with
existing emission standards and provides 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 mounting the standard 3.5" diskette drive
!
(supports 720 KB and 1.44 MB diskette media).
A front panel bay for mounting the standard 24X (slim) CD-ROM drive.
!
Two 5.25-inch removable media front panel bays for mounting half-height 5.25"
!
peripheral devices: optional tape drives, etc.
Your system may include hot-swap SCSI hard disk drive bays for mounting up to
!
five hot-swap disk drives in easily removable drive carriers. Each drive has a set
of two lights to indicate the fault or other status: power-on (green LED), activity
(flashing green LED), fault (yellow LED). For mounting additional SCSI hard
disk drives an optional five SCSI hard disk drive cage is available
Note:
swap back plane that require an 80-pin single connector attachment
(SCA) connector on the drives that you install.

SAF-TE Logic

Note:
SCSI disk drive cage. SAF-TE Logic is not available in systems that
include the non-hot-swap hard SCSI disk drive cage.
The SCSI backplane includes SAF-TE (SCSI Accessed Fault Tolerant Enclosure) logic
that provides an interface to the disk subsystem that supports status signals, hot
swapping drives, and enclosure monitoring.
The transport mechanism for the standardized alert detection and status reporting is the
SCSI bus. Disk drives, power supplies, cooling fans, and temperature are continually
monitored and the conditions then reported over the SCSI bus to the system. When used
with RAID management software the user can be alerted of impending or imminent
disk conditions requiring attention. This allows the user to react to conditions that could
normally go unnoticed until data loss.
1-8 System Overview
The hot-swap SCSI hard disk drive bays contain a hot-
SAF-TE Logic is in systems that include the hot-swap