ANSI INCITS 458

Abstract

This standard defines the command set extensions to control operation of Object-Based Storage devices. The clause(s) of this standard pertaining to the SCSI Object-Based Storage Device class, implemented in conjunction with the applicable clauses of the ISO/IEC 14776-453 SCSI Primary Commands -4 (SPC-4), specify the standard command set for SCSI Object-Based Storage devices. <br>The objective of this standard is to provide the following: <br>a) Permit an application client to communicate with a logical unit that declares itself to be an Object-Based Storage device in the PERIPHERAL DEVICE TYPE field of the INQUIRY command response data over a SCSI service delivery subsystem; <br>b) Enable construction of a shared storage processor cluster with equipment and software from many different vendors; <br>c) Define commands unique to the type of SCSI Object-Based Storage devices; and <br>d) Define commands to manage the operation of SCSI Object-Based Storage devices. <br>The set of SCSI standards specifies the interfaces, functions, and operations necessary to ensure interoperability between conforming SCSI implementations. This standard is a functional description. Conforming implementations may employ any design technique that does not violate interoperability. <br>The term SCSI is used to refer to the family of standards described in this clause. <br>The following features from previous standards have been made obsolete in this standard: <br>a) The ROOT bit in the LIST command parameter data; <br>b) The COLTN bit in the LIST COLLECTION command parameter data; <br>c) All discussion of linked commands; and <br>d) Since the CDB format was changed globally, all service action coded value assignments from OSD were made obsolete in this standard and new coded values were assigned.