HP-UX iSCSI Software Initiator Support Guide, HP-UX 11i v1 and 11i v2, July 2005

Chapter 7

The iSCSI Software Interface Driver

iSCSI Software Interface Driver Overview

The HP-UX iSCSI Software Interface Driver (SWD) is a host based implementation of the iSCSI protocol that

uses standard Network Interface Cards (NICs). There are no special network infrastructure requirements.

The iSCSI SWD interfaces with the iSCSI transport layer for session management and SCSI support. It also

interfaces with the network stack above the TCP layer. iSCSI Protocol Data Units (PDUs) are sent and

received by the iSCSI SWD on the TCP stream.

The iSCSI SWD receives SCSI commands and data from the iSCSI transport layer and sends SCSI responses

to the iSCSI transport layer.