scsi how to

[carol pritt]

please could you e-mail reply as well as post. have a 68
pin scsi card and 80 pin adapter. iam new to scsi and
confused as how to set it up .have the card installed and
ribbon connected to drive but computer at boot up tells
me no bios. my hard drive is seagate cheetah drive
ST118202LC. don't know how to set pins on drive or
adapter or termination. end of ribbon tells me automatic
termination, this end goes after drive or to card? need
a manual with pic's or step by step set up to learn
scsi. please help want to use my drive. thank you

 

[Guest]

SCSI (pronounced scuzzy) is the acronym for Small Computer System Interface,
a high performance peripheral interface that can independently distribute
data among peripherals attached to the PC. Unlike ATA, SCSI incorporates
those instructions needed for communication with the host PC.

Freeing the host computer from this job makes it more efficient in
performing its user-oriented activities. SCSI is a specification for a
peripheral bus and command set defined in an ANSI standard X3.131-1986.

SCSI drives are usually more suitable for high-end computer systems, which
require maximum possible performance. SCSI provides for higher data transfer
rates and less CPU load than ATA but has higher cost and complexity in the
setup.

Also, SCSI supports more devices than ATA. Another important advantage of
SCSI is that most SCSI products are backward-compatible. A faster, newer
drive can still work with the older and slower controller, but will, of
course, lose in performance.

The history of SCSI goes back to 1981, when Shugart Associates (presently,
Seagate Technology Corporation) joined NCR Corporation in their efforts to
develop an intelligent interface for disk drives. This new interface was
called Shugart Associates Systems Interface or SASI interface. In 1982, SCSI
was born on base of SASI. In 1986, ANSI accepted SCSI as an ANSI standard.

There are different flavor of SCSI, different in width (8-bit vs. 16-bit)
and speed (Standard vs. Fast).

Fast SCSI doubles the data transfer rate over the same 50-pin cable by using
synchronous (vs. asynchronous) data transfer.

Wide SCSI uses "wider" 68-pin cable to allow 16-bit data stream vs. 8-bit
for 50-pin connector.

A combination of both wide and fast technologies provides for the greater
then 80 MB/s data transfer rates.

for mopre information read:
http://www.usbyte.com/common/SCSI_Interface.htm