scope:

This standard defines the command set extensions to facilitate operation of SCSI stream devices. The clauses of this standard, implemented in conjunction with the applicable clauses of the SCSI Primary Commands - 2 standard, fully specify the standard command set for the SCSI stream device class.

The objectives of the SCSI-3 Stream Commands standard (SSC) is to provide the following:

a) Permit an application client to communicate over a SCSI service delivery subsystem, with a logical unit that declares itself to be a sequential access device or printer device in the device type field of the INQUIRY command response data;

b) define commands unique to each type of SCSI stream device;

c) define commands to manage the operation of SCSI stream devices; and

d) define the differences between the types of SCSI stream devices.

At the time this standard was generated, examples of the SCSI general structure included:

Physical Interconnects:

Fibre Channel Arbitrated Loop [X3.272:1995]

Fibre Channel Arbitrated Loop - 2 [NCITS.332:1999]

Fibre Channel - Physical and Signaling Interface [X3.230-1994]

High Performance Serial Bus [IEEE 1394-1995]

SCSI Parallel Interface - 2 [X3.302:1999]

SCSI Parallel Interface - 3 [T10/1302-D]

Serial Storage Architecture Physical Layer 1 [X3.293:1996]

Serial Storage Architecture Physical Layer 2 [NCITS.307:1998]

Transport Protocols:

Serial Storage Architecture Transport Layer 1 [X3.295:1996]

SCSI-3 Fibre Channel Protocol [X3.269:1996]

SCSI Fibre Channel Protocol - 2 [T10/1144-D]

SCSI Serial Bus Protocol - 2 [NCITS.325:1998]

Serial Storage Architecture SCSI-3 Protocol [NCITS.309:1998]

Serial Storage Architecture Transport Layer 2 [NCITS.308:1998]

Shared Command Set:

SCSI-3 Primary Commands [X3.301:1997]

SCSI Primary Commands - 2 [T10/1236-D]

Device-Type Specific Command Sets:

SCSI-3 Stream Commands (this standard)

SCSI-3 Block Commands [NCITS.306:1998]

SCSI-3 Enclosure Services [NCITS.305:1998]

SCSI-3 Medium Changer Commands [NCITS.314:1998]

SCSI Controller Commands - 2 [NCITS.318:1998]

SCSI Multimedia Commands [X3.304:1997]

SCSI-3 Multimedia Commands - 2 [T10/1228-D]

SCSI Multimedia Commands - 3 [T10/1363-D]

Architecture Model:

SCSI-3 Architecture Model [X3.270:1996]

SCSI Architecture Model - 2 [T10/1157-D]

Common Access Method:

SCSI Common Access Method [X3.232:1996]

SCSI Common Access Method - 3 [T10/990-D]

The term SCSI is used to refer to the family of standards described in this clause. The Small Computer System Interface - 2 standard (X3.131-1994) and its architecture are referred to herein as SCSI-2.