Ultra2 Scsi I/O Subsystem; Installing Scsi Devices - SOYO SY-D6IBA2 Quick Start Manual

SY-D6IBA2 Quick Start Guide
SCSI Utilities
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Ultra2 SCSI I/O Subsystem

Your new SYD6IBA2 high-performance Motherboard is equipped with the onboard
®
Adaptec AIC-7890 Ultra2 SCSI host adapter for your high bandwidth applications, providing
data transfer rates of up to 80 Mbytes per second. The Ultra2 SCSI is an input/output bus
interface that provides a powerful multitasking interface between your computer' s PCI bus
and your SCSI devices.
With SCSI, you can connect a variety of devices on your computer (Hard/Floppy Disk Drives,
CD-ROM Drives, Scanners, Tape Drives, Removable Media Drives, etc.) in a daisy-chain
topology to a common host adapter. Daisy-chaining SCSI devices allows them to
communicate with each other by sending commands and data via the SCSI bus.
The AIC-7890 Ultra2 SCSI provides maximum data transfer rates of 20 Mbytes/sec in the
narrow 8-bit mode (Fast SCSI) and 40 Mbytes/sec in the wide 16-bit mode (Ultra SCSI), and
80 Mbytes/sec in the LVD mode (Ultra2 SCSI)

Installing SCSI Devices

Your Motherboard features two internal SCSI connectors onboard, and comes with one 50-
pin flat cable, one 68-pin flat cable, and one 68-pin Ultra2 cable.
50-pin Fast SCSI Connector
50-pin Fast SCSI internal connector
Narrow SCSI allows data transfer rates of up to 20 Mbytes/sec. With Narrow SCSI, you can
connect up to 7 internal Fast SCSI devices to the 50-pin Fast SCSI connector on the
Motherboard. Use the enclosed Narrow SCSI cable to connect up to 2 internal SCSI
devices.
If you are connecting more than 2 internal SCSI devices, you must use an internal SCSI
cable with enough connectors to accommodate all your devices. Contact your dealer for
special cable service.
When Fast SCSI devices are connected to the bus, the total length of all cables is not to
exceed 3 meters (9.8 ft.) to ensure reliable operation.
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