
Features 1 –Introduction
1-2 DC8151101-00 C
TheQLA12160boardsupportsUltra,Ultra2,and Ultra3transferspeeds.Theboard
can connect computers to other computers or to peripheral devices such as
CD-ROM drives, tape drives, and hard disk drives. SCSI allows connecting the
following numbers and types of devices to a single port by daisy chaining:
■15 fast, wide SCSI devices
■15 Ultra2 or Ultra3, LVD SCSI devices
■6 Ultra SCSI devices (QLA12160 board in single-ended mode)
A daisy chain is a series of connections where the first device is connected to the
host adapter board, the second device is connected to the first device, and so on.
A daisy chain can be created either by using a daisy chain cable (one cable with
multiple connectors) or by using multiple cables. Each SCSI device must have a
unique SCSI ID.
Because SCSI allows the computer to use a standard set of commands to
communicate with peripherals, adding a variety of peripherals to your computer
using one host adapter board is easy.
1.2
Features
■Compliance with Intel PCI version 2.2 specification
■Compliance with ANSI X3.131-1994 SCSI-2 standard
■Compliance with ANSI X3T10/1071D SCSI-3Fast-20 standard(Ultra SCSI)
■Compliance with ANSI X3T10/1142D Fast-40 draft (Ultra2 SCSI)
■CompliancewithANSIT10project855D,InformationTechnology—SCSI-3
Parallel Interface (SPI)
■Compliance with ANSI T10 project 1142D, Information Technology—SCSI
Parallel Interface-2 (SPI-2)
■Compliance with ANSI T10 project 1302D, Information Technology—SCSI
Parallel Interface-3 (SPI-3)
■Compliance with U.S. and international safety and emissions standards
■Support for asynchronous and synchronous transfer modes
■Support for synchronous SCSI data transfer rates:
❑Ultra3, LVD SCSI (160 MBps)
❑Ultra2, LVD SCSI (80 MBps)
❑Ultra SCSI wide (40 MBps)
❑Ultra SCSI narrow (20 MBps)
❑Fast SCSI wide (20 MBps)
❑Fast SCSI narrow (10 MBps)
❑SCSI narrow (5 MBps)
■Support for single-ended mode
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