Technical Information 1-17The BIOS-resident SCSISelect configuration utility eliminates the need to handle jumpersor terminators while adding peripherals. All configuration and terminator settings arecontrolled via the keyboard (see “SCSISelect Utility” in Section 2). The SCSI adapterboard feature the following:n PCI to UltraSCSI host adapter with SCSISelect, utilizing the PCI local-bus tosupport up to fifteen SCSI devicesn Bus master DMA interface protocoln 32-bit bus widthn Up to 133 MB/second data transfer raten Fast and wide 20 MB/second SCSI synchronous data raten 6 MB/second SCSI asynchronous data raten SCSI-2 and SCSI-3 device protocoln Advanced SCSI Programming Interface (ASPI) compliant, multi-threaded I/Oscatter/gather, tagged queuing, disconnected, synchronous and asynchronous fastand wide.n Extended translation scheme supports up to eight GB per diskn Drivers may be single-ended, active, or programmable via SCSI configurationutility.DISKETTE DRIVEUp to two diskette drives are supported in the system. The installed 3 1/2-inch diskettedrive is connected by a single ribbon cable with two drive connectors. The diskette drivecable plugs directly into the system board. Typically, there are no switches or jumpers thatneed to be set, both diskette drives are terminated and the cable determines drive A and B.Connector locations are given in Appendix A.HARD DISK DRIVEUp to four IDE hard drives are supported in the system (non-SCSI configurations). In theSCSI configuration, up to 15 SCSI devices (disk drives, CD-ROM drives, scanners, tapebackups) are supported by the Ultra Wide SCSI adapter board. Two SCSI devices can beinstalled internally in the system chassis.IDE Hard DrivesThe system board has two IDE/PCI interface connectors (primary and secondary) forconnecting IDE storage devices such as hard disk drives. Each connector supports up totwo IDE devices. Connector locations are given in Appendix A.
