Supermicro 5025M-4, User Manual

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1-5
Chapter 1: Introduction
1-3 Server Chassis Features
The following is a general outline of the main features of the SC822S-400LP/
SC822i-400LP chassis.
System Power
When confi gured as the 5025M-4/5025M-i, the SC822S-400LP/SC822i-400LP
chassis includes a single 400W power supply.
SCSI Subsystem (5025M-4 only)
The SCSI subsystem supports six 80-pin SCA Ultra320 SCSI hard drives. (Any
standard 1" drives are supported. SCA = Single Connection Attachment.) The SCSI
drives are connected to an SCA backplane that provides power, bus termination
and confi guration settings. The SCSI drives are also hot-swap units.
Control Panel
The SC822S-400LP/SC822i-400LP control panel provides important system moni-
toring and control information. LEDs indicate power on, network activity, hard disk
drive activity and system overheat conditions. Also present are a main power button
and a system reset button.
I/O Backplane
The backplane of the SC822S-400LP/SC822i-400RC supports the use of up to
seven low-profi le expansion cards and provides one COM port, one VGA port, two
USB ports, PS/2 mouse and keyboard ports and two Gb Ethernet (LAN) ports.
(See Figure 1-2.)
Cooling System
The SC822S-400LP/SC822i-400LP chassis' revolutionary cooling design that in-
cludes four 8-cm system cooling fans. The fans plug into chassis fan connectors
that are located behind the drive bays. A "Fan Speed Control Mode" setting in
BIOS allows the user to set the chassis fan speed [recommended setting is "4-
pin (Server)]". If any fan fails and the ambient air temperature inside the chassis
becomes too high, an overheat LED and alarm will be activated.