1-6 System OverviewPower SupplyThe power supply consists of the power supply bay and one power supply module. Asecond power supply module can be purchased to provide a redundant, 1+1 system.With either configuration, the power supply provides 500 watts of power and isdesigned to minimize EMI.The power subsystem supports implementation of remote management featuresincluding remote enable that permits power to be activated from a variety of sources.Peripheral BaysYour server supports a variety of standard PC AT-compatible peripheral devices. Thechassis includes these peripheral bays:! A removable media front panel bay for mounting a half-height 3.5-inchperipheral device such as an optional tape drive.! Depending on your configuration, your server includes either six or seven hot-swap SCSI hard disk drive bays for mounting hard disk drives installed in easilyremovable drive carriers.Note: The hot-swap SCSI hard disk drive bays contain a hot-swap back plane that requires an 80-pin single connector attachment(SCA) connector on the drives that you install.The flex bay can be used with either the standard CD-ROM/FDD module or a seventhhot swappable SCSI HDD. The CD-ROM/FDD module may only be inserted orremoved from the flex bay when system power is turned off. The CD-ROM/FDDmodule is NOT hot swappable. The standard 3.5-inch diskette drive supports 720 KBand 1.44 MB diskette media.The chassis includes four 60-mm non-hot-swappable system fans for cooling theprocessor(s), hard drives, and add-in cards. The system fans are mounted in a fanassembly located in the middle of the chassis to pull cooling air through the chassis.The power supply contains a single fan for cooling.SAF-TE LogicThe SCSI backplane includes SAF-TE (SCSI Accessed Fault Tolerant Enclosure) logicthat provides an interface to the disk subsystem that supports status signals, hotswapping drives, and enclosure monitoring. The transport mechanism for thestandardized alert detection and status reporting is the SCSI bus. Disk drives, powersupplies, cooling fans, and temperature are continually monitored and the conditionsthen reported over the SCSI bus to the system.When used with RAID management software the user can be alerted of impending orimminent disk conditions requiring attention. This allows the user to react to conditionsthat could normally go unnoticed until data loss.
