Features
1 – Introduction
1-2
DC8151101-00 C
The QLA12160 board supports Ultra, Ultra2, and Ultra3 transfer speeds. The board
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-3 Fast-20 standard (Ultra SCSI)
■
Compliance with ANSI X3T10/1142D Fast-40 draft (Ultra2 SCSI)
■
Compliance with ANSI T10 project 855D, Information Technology— 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
