System Overview 1-7Power SupplyThe ATX300 watt power supply is switch-selectable for 115 or 230 Vac at an operatingfrequency of 50/60 Hz. It is designed to comply with existing emission standards andprovides sufficient power for a fully loaded system configuration. The power supplyvoltage selection switch is factory set to 115Vac for systems used in the United States;it is set to 230Vac for systems used in Europe.Peripheral BaysThe system supports a variety of standard PC AT-compatible peripheral devices. Thechassis includes these peripheral bays:! A 3.5-inch front panel bay for mounting the standard 3.5" diskette drive (supports720 KB and 1.44 MB diskette media)! Four 5.25-inch removable media front panel bays for mounting half-height 5.25-inchperipheral devices: standard CD ROM drive and optional tape drives, etc.! Seven hot-swap SCSI hard disk drive bays for mounting up to seven SCSI hard diskdrives in easily removable drive carriers.Note: The SCSI hard disk drive bays contain a hot-swap backplane that require an 80-pin single connector attachment (SCA)connector on the drives that you install.SAF-TE BoardThe system has a SAF-TE (SCSI Accessed Fault Tolerant Enclosure) board thatprovides an interface to the disk subsystem that supports status signals, hot swappingdrives, and enclosure monitoring.The transport mechanism for the standardized alert detection and status reporting is theSCSI bus. Disk drives, power supplies, cooling fans, and temperature are continuallymonitored and the conditions then reported over the SCSI bus to the system. When usedwith RAID management software the user can be alerted of impending or imminentdisk conditions requiring attention. This allows the user to react to conditions that couldnormally go unnoticed until data loss.
