Mylex Disk Array RAID Controller (standard on dual and quadprocessor high availability configurations).Descriptions of the adapter board, monitor module, and RAID controller are includedearlier in this chapter.Memory ExpansionAll servers except the quad-processor configurations come standard with onememory module containing 32 MB (four 8-MB SIMMs) of high speed SIMM memory.The network ready and high availability quad-processor configurations come standardwith one memory module containing 64 MB (eight 8-MB SIMMs) of SIMM memory.Memory can be expanded up to 384 MB on a single module or up to 768 MB usingtwo modules. Optional SIMMs are installed in SIMM sockets on the memorymodules. Optional 8-, 16-, and 32-MB SIMMs (36-bit, 70 ns) are available from NEC.See Chapter 7, "Installing System Options," for further information and installationinstructions.Storage Device ExpansionThe server supports optional IDE storage devices, fast/narrow SCSI-2 devices, orfast/wide SCSI-2 devices, including:up to four 5 1/4-inch form factor IDE or SCSI storage devices (diskette,hard disk drive, tape, CD-ROM) in the top front panel bayup to six 3 1/2-inch, 1-inch height, SCSI-2 SCA hard disk drives in thebottom front hot swap bay.See Chapter 4, "Taking Your System Apart," for information on installing optional 51/4-inch storage devices. See Chapter 6, "Hot Swapping SCSI Hard Drives," forinformation on installing and swapping hard drives.BIOS and System Configuration UtilityHardware configuration takes place during the BIOS Power-On-Self-Test (POST) andPCI and ISA Plug-and-Play auto configuration. You can modify the hardwareconfiguration using the bootable System Configuration Utility (SCU).The SCU displays a series of system parameters, including system memory, IDEcontroller, SCSI controller, serial and parallel ports, and passwords. You can selectthe appropriate option of each parameter for your application. When finished, save theconfiguration to CMOS RAM and NVRAM. The system reboots with the newconfiguration parameters.Table 1-3 summarizes BIOS and SCU features. See Chapter 3, "Using SystemUtilities," for information on using the SCU.Table 1-3. BIOS and SCU Feature Summary