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 afterAC power is lost, the battery can provide power to the system for a limited amount of time—from 15 minutes to approximately an hour. A UPS that providesonly 5 minutes of battery power allows you to shutdown the system. Use surge protectors and PDUs with all universal power supplies, and ensure that the UPSis UL-safety approved.Other Documents You May Needl The Rack Installation Guide included with your rack solution describes how to install your system into a rack.l The Setting Up Your System document provides an overview of initially setting up your system.l The User's Guide provides information about system features and technical specifications.l The Installation and Troubleshooting Guide describes how to troubleshoot the system and install or replace system components.l Systems management software documentation describes the features, requirements, installation, and basic operation of the software.l Operating system documentation describes how to install (if necessary), configure, and use the operating system software.l Documentation for any components you purchased separately provides information to configure and install these options.l Updates are sometimes included with the system to describe changes to the system, software, and/or documentation.l Release notes or readme files may be included to provide last-minute updates to the system or documentation or advanced technical reference material intendedfor experienced users or technicians.Technical SpecificationsThe System Information Guide provides important safety and regulatory information. Warranty information may be included within this document or as aseparate document.NOTE: Always read the updates first because they often supersede information in other documents.ProcessorsMicroprocessor type one or two Intel Xeon microprocessors with a minimumoperating frequency of a least 1.8 GHzFront-side bus (external) speed 400 MHzInternal cache 512 KB cacheMath coprocessor internal to microprocessorExpansion BusBus type PCI/PCI-XExpansion slots six dedicated PCI/PCI-X (full-length, 64-bit, two at33/66/100/133 MHz; four at 33/66/100 MHz) and onededicated PCI (32/33 MHz)MemoryArchitecture 72-bit ECC PC-2100 DDR SDRAM DIMMs, with 2-way interleavingMemory module sockets six 72-bit wide 168-pin DIMM socketsMemory module capacities 128-, 256-, 512-MB, or 1-GB registered DDRSDRAM DIMMsMinimum RAM 256 MB