pc

10.25 pc

11.25 pc

38

 

 

34.5 pc

 

Responder

A FC term referring to the answering device.

 

RISC Core

 

LSIFC909 chips contain a RISC (Reduced Instruction Set Computer)

 

 

 

processor, programmed through microcode scripts.

 

ROM

 

Read Only Memory. Memory from which information can be read but not

 

 

 

changed. The contents of ROM are not erased when the computer is

 

 

 

turned off.

 

SAN

 

Storage Area Network.

 

SCAM

 

SCSI Configured AutoMatically. A method to automatically allocate SCSI

 

 

 

IDs using software when SCAM compliant SCSI devices are attached.

 

Scatter/Gather

A device driver feature that lets the host adapter modify a transfer data

 

 

 

pointer so that a single host adapter transfer can access many segments

 

 

 

of memory. This minimizes interrupts and transfer overhead.

 

SCB

 

SCSI Command Block.

 

SCSI

 

Small Computer System Interface. A specification for a high-performance

 

 

 

peripheral bus and command set. The original standard is referred to as

 

pc

 

SCSI-1.

 

 

 

 

SCSI-2

 

The current SCSI specification which adds features to the original

 

 

 

SCSI-1 standard.

 

SCSI ID

 

A way to uniquely identify each SCSI device on the SCSI bus. Each

 

 

 

SCSI bus has eight available SCSI IDs numbered 0 through 7 (or 0

 

 

 

through 15 for Wide SCSI). The host adapter usually gets ID 7 giving it

 

 

 

priority to control the bus.

 

Sequence

 

A term referring to one of the FC “building blocks”, composed of one or

 

 

 

more related frames for a single operation.

 

SGL

 

Scatter Gather List.

 

SNAP

 

SubNetwork Access Protocol.

 

Synchronous

One of the ways data is transferred over the SCSI bus. Transfers are

 

Data Transfer

clocked with fixed frequency pulses. This is faster than asynchronous

 

 

 

data transfer. Synchronous data transfers are negotiated between the

 

 

 

SCSI host adapter and each SCSI device.

 

A-6

Glossary of Terms and Abbreviations

Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.