Chapter 1. SAN routing 7
1.2.3 iSCSI
The Small Computer Systems Interface (SCSI) protocol has a client/server
architecture. Clients (called
initiators) issue SCSI commands to request services
from logical units on a server known as a
target. A SCSI transport maps the
protocol to a specific interconnect.
The SCSI protocol has been mapped over various transports, including Parallel
SCSI, Intelligent Peripheral Interface (IPI), IEEE-1394 (firewire), and Fibre
Channel. All of these transports are ways to pass SCSI commands. Each
transport is I/O specific and has limited distance capabilities.
The iSCSI protocol is a means of transporting SCSI packets over TCP/IP to take
advantage of the existing Internet infrastructure.
A session between a iSCSI ...