scope:

This part of ISO/IEC 14776 defines the command set extensions in order to facilitate operation of the sequential-access device type. This part of ISO/IEC 14776, implemented in conjunction with the requirements of the SCSI Architecture Model-4 (SAM-4) standard and the applicable clauses of the SCSI Primary Commands-4 (SPC-4) standard, fully specify the standard command set for the sequential-access device type. This standard provides the following: a) it permits an application client to communicate over a SCSI service delivery subsystem, with a logical unit that declares itself to be a sequential-access device in the PERIPHERAL DEVICE TYPE field of the standard INQUIRY data (see SPC-4); b) it defines commands unique to the sequential-access device type; and c) it defines commands in order to manage the operation of the sequential-access device type. Figure 1 shows the relationship of this standard to the other standards and related projects in the SCSI family standards as of the publication of this standard.