Dell POWEREDGE 1855 - Manual (Page 19)

l Support for symmetric multiprocessing (SMP), which is available on systems with two Intel Xeon processors. SMP greatly improves overall system
performance by dividing processor operations between independent processors. To take advantage of this feature, you must use an operating system
that supports multiprocessing.
l A minimum of 512 MB of system memory, upgradable to 8 GB by installing 2-GB dual-ranked, 144-bit, ECC registered, PC2-3200 DDR2 SDRAM memory
modules in the four memory module sockets on the server module board; or upgradable to 12 GB by installing six single-ranked, 2-GB memory modules.
The server module supports two-way memory interleaving, rated for 400-MHz operation.
Additional memory capacities will be supported as they become available.
l Support for up to two 1-inch, hot-pluggable, Ultra320 SCSI hard drives.
l Integrated internal drive mirroring allows two SCSI disks to be mirrored through the integrated RAID controller.
l An external port to support USB devices using the custom cable. USB devices include a mouse, a keyboard, flash drive, a 1.44-MB, 3.5-inch diskette
drive, or a CD drive.
l An integrated VGA-compatible video subsystem with an ATI Radeon 7000 M video controller. This video subsystem contains 16 MB of SDRAM video
memory (nonupgradable). Maximum resolution is 1280 x 1024 x 65,000 colors (noninterlaced).
For more information about specific features, see " Technical Specifications "and " Other Documents You May Need ."
Software Features
l A System Setup program for quickly viewing and changing system configuration information. For more information about this program, see " Using the
System Setup Program ."
l Enhanced security features, including a system password and a setup password, available through the System Setup program.
l System diagnostics for evaluating system components and devices. For information about using diagnostics, see "Running System Diagnostics" in your
Installation and Troubleshooting Guide.
l Video drivers for displaying many application programs in high-resolution modes.
l Systems management software and documentation. Systems management software is used to manage and monitor each individual server module as
well as the system as a whole, including all of the server modules, network switch modules, power supplies, and fans. Systems management software
manages the system locally and remotely on a network. Dell recommends that you use the systems management software provided with this system.
l Optional solutions software for Web hosting, caching, or load balancing. See your solutions software documentation for more information.
Supported Operating Systems
l Microsoft® Windows® 2000 Server and Advanced Server with Service Pack 4
l Microsoft Windows Server™ 2003 Standard Edition, Enterprise Edition, and Web Edition with Service Pack 1
l Microsoft Windows Server 2003, Standard and Enterprise x64 Edition
l Red Hat® Linux Enterprise Server AS, ES, and WS (version 4)
l Red Hat Linux Enterprise Server for Intel Extended Memory 64 Technology (Intel EM64T) AS, ES, and WS (version 4)
l SuSE Linux Enterprise Server 9 for Intel EM65T
Power Protection Devices
Certain devices protect your system from the effects of problems such as power surges and power failures.
l PDU — Uses circuit breakers to ensure that the AC current load does not exceed the PDU's rating.
l Surge protector — Prevents voltage spikes, such as those that may occur during an electrical storm, from entering the system through the electrical
outlet. They do not protect against brownouts, which occur when the voltage drops more than 20 percent below the normal AC line voltage level.
l Line conditioner — Maintains a system's AC power source voltage at a moderately constant level and provides protection from brownouts, but does not
protect against a complete power loss.
l UPS — Uses battery power to keep the system running when AC power is unavailable. The battery is charged by AC power while it is available so that
after AC power is lost, the battery can provide power to the system for a limited amount of time—from 5 minutes to approximately an hour. A UPS that
provides only 5 minutes of battery power allows you to save your files and to shut down the system. Use surge protectors and PDUs with all universal
power supplies, and ensure that the UPS is UL-safety approved.
Other Documents You May Need
Dell continues to offer new types of connectivity modules for your system and provides documentation on how to set up and use them. The documentation for
NOTE: Two-way interleaving is not supported in the single memory module configuration.
NOTE: Only Dell-supplied USB CD-ROM and diskette drives are supported; use only a USB 2.0 compliant cable with a length not to exceed 3
meters (118.1 inches).