SCSI Primary Commands - 2.pdf

18 July 2001 T10/1236-D Revision 20Table C.2 — Operation Codes (part 3 of 7)D - DIRECT ACCESS DEVICE (SBC)Device Column key. T - SEQUENTIAL ACCESS DEVICE (SSC) M = Mandatory. L - PRINTER DEVICE (SSC) O = Optional. P - PROCESSOR DEVICE (SPC-2) V = Vendor specific. . W- WRITE ONCE READ MULTIPLE DEVICE (SBC) Z = Obsolete. . R - C/DVD DEVICE (MMC-2). . S - SCANNER DEVICE (SCSI-2). . . O - OPTICAL MEMORY DEVICE (SBC). . . M- MEDIA CHANGER DEVICE (SMC). . . C - COMMUNICATION DEVICE (SCSI-2). . . . A- STORAGE ARRAY DEVICE (SCC). . . . E- ENCLOSURE SERVICES DEVICE (SES). . . . B- SIMPLIFIED DIRECT-ACCESS DEVICE (RBC). . . . . K- OPTICAL CARD READER/WRITER DEVICE (OCRW). . . . .OP DTLPWRSOMCAEBK Description27 V V V28 M MMMM MM READ(10)28 O GET MESSAGE(10)29 V V V O READ GENERATION2A M M M M M O WRITE(10)2A O SEND(10)2A O SEND MESSAGE(10)2B O O M O O SEEK(10)2B O LOCATE(10)2B O POSITION TO ELEMENT2C V O O ERASE(10)2D V O O READ UPDATED BLOCK2E O O O O M O WRITE AND VERIFY(10)2F O O O O VERIFY(10)30 Z Z Z Z SEARCH DATA HIGH(10)31 Z Z Z Z SEARCH DATA EQUAL(10)31 O OBJECT POSITION32 Z Z Z Z SEARCH DATA LOW(10)33 O O O O SET LIMITS(10)34 O O O O O PRE-FETCH(10)34 M READ POSITION34 O GET DATA BUFFER STATUS35 O O M O M O SYNCHRONIZE CACHE(10)36 O O O O O LOCK UNLOCK CACHE(10)37 O O READ DEFECT DATA(10)38 O O O MEDIUM SCAN39 ZZZZ ZZZ Z COMPARE3A ZZZZZZZZ Z COPY AND VERIFY3B OOOOOOOOOOOOMO WRITE BUFFER3C OOOOOOOOOOO O READ BUFFER3D O O UPDATE BLOCK3E O O O O READ LONG3F O O O WRITE LONGa Approved for SSC-2 or proposed as part of the SSC-2 Explicit Address Model.b Approved for SPC-3.c Proposal for SPC-3 under consideration.d May be used by Socket Services project.e Place holder for when reserved operation codes are exhausted.f MAINTENANCE IN service action 0Ah and MAINTENANCE OUT service action 0Ah defined in a proposal underconsideration for SPC-3.dpANS SCSI Primary Commands - 2 (SPC-2) 251