AC450NX Rack Server System Product Guide
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The easy-to-integrate server can easily accommodate the needs of a variety of high performance

applications—for example, network servers, multiuser systems, and large database operations. As

your application requirements increase, you can upgrade your server with:

• More powerful processors

• Additional memory

• Other peripheral devices

• Add-in I/O boards

Server Features

Feature Comment
Power system with redundancy The 750 watt, 220 VAC autoranging power supplies include integrated
fans for cooling. In a rack server with three supplies (2 + 1), the third
one is redundant. The supplies can be replaced—hot-swapped—
without turning the server power off. The server requires a minimum of
two power supplies. LEDs on the back of the power supply indicate
power on, failure, and predictive failure.
Server chassis The electrogalvanized metal used in manufacturing the server chassis
minimizes electromagnetic interference (EMI) and radio frequency
interference (RFI).
3.5-inch diskette drive in the 3.5-inch bay.
5.25-inch IDE CD-ROM drive in the 5.25-inch half-height bay.
Two 3.5-inch wide by 1.0-inch or 1.6-inch hot-swappable LVDS hard
disk drives mounted side-by-side in the 3.5-inch hot-docking bays. The
hot-docking bays allow hot-swapping of hard disk drives without
shutting down the server.
Three power supply bays populated with either two or three power
supplies.
Ten I/O expansion slot covers.
The plastic front bezel provides airflow and easy access to drives in the
hot-docking bays. The removable top covers provide proper airflow
and easy access to components inside the server. A padlock (not
supplied) on the back of the chassis secures the covers to prevent
unauthorized entry into the server—only technically qualified personnel
should remove the server covers.
Cool ing syst em with redundancy Six fans (5 + 1) cool and circulate air through the server. The sixth fan
is redundant. The fans can be replaced—hot-swapped—without
turning the server power off. An LED mounted next to each fan
guarantees positive identification of the failed fan.
Integrated power supply fans—two or three—cool and circulate air
through the power supplies and the bottom of the chassis.
continued