SCSI Primary Commands - 2.pdf

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T10/1236-D Revision 20 18 July 20018.4 Vital product data parameters8.4.1 Vital product data parameters overview and page codesThis subclause describes the vital product data page structure and the vital product data pages (see table 167) thatare applicable to all SCSI devices. These pages are optionally returned by the INQUIRY command (see 7.3).8.4.2 ASCII implemented operating definition pageTable 167 — Vital product data page codesPage code Description ReferenceSupportRequirements82h ASCII implemented operating definition page 8.4.2 Optional01h - 7Fh ASCII information page 8.4.3 Optional83h Device identification page 8.4.4 Mandatory81h Obsolete 3.3.700h Supported vital product data pages 8.4.5 Mandatory80h Unit serial number page 8.4.6 Optional84h - BFh ReservedC0h - FFh Vendor specificThe ASCII implemented operation definition page (see table 168) contains operating definition description data forall operating definitions implemented by the target.Table 168 — ASCII implemented operating definitionBitByte7 6 5 4 3 2 1 00 PERIPHERAL QUALIFIER PERIPHERAL DEVICE TYPE1 PAGE CODE (82h)2 Reserved3 PAGE LENGTH (n-3)4 ASCII OPERATING DEFINITION DESCRIPTION LENGTH (m-4)5ASCII OPERATING DEFINITION DESCRIPTION DATAmm+1Vendor specific description datanThe PERIPHERAL QUALIFIER field and the PERIPHERAL DEVICE TYPE field are as defined in 7.3.2.The PAGE LENGTH field specifies the length of the following page data. If the allocation length is less than the lengthof the data to be returned, the page length shall not be adjusted to reflect the truncation.The ASCII OPERATING DEFINITION DESCRIPTION LENGTH field specifies the length in bytes of the ASCII OPERATINGDEFINITION DESCRIPTION DATA field that follows. If the allocation length is less than the length of data to be returned,the ASCII operating definition description length shall not be adjusted to reflect the truncation. A value of zero inthis field indicates that no ASCII operating definition description data is available.208 dpANS SCSI Primary Commands - 2 (SPC-2)
18 July 2001 T10/1236-D Revision 20The ASCII OPERATING DEFINITION DESCRIPTION DATA field contains the ASCII operating definition description data forthe device server. The data in this field shall be formatted in lines (or character strings). Each line shall containonly graphic codes (i.e., code values 20h through 7Eh) and shall be terminated with a NULL (00h) character. Thetext is vendor specific.8.4.3 ASCII information pageThe ASCII information page (see table 169) contains information for the field replaceable unit code returned in theREQUEST SENSE data (see 7.20.2).Table 169 — ASCII information pageBitByte7 6 5 4 3 2 1 00 PERIPHERAL QUALIFIER PERIPHERAL DEVICE TYPE1 PAGE CODE (01h - 7Fh)2 Reserved3 PAGE LENGTH (n-3)4 ASCII LENGTH (m-4)5ASCII INFORMATIONmm+1Vendor specific informationnThe PERIPHERAL QUALIFIER field and the PERIPHERAL DEVICE TYPE field are defined in 7.3.2.The PAGE CODE field contains the same value as in the PAGE OR OPERATION CODE field of the INQUIRY CDB (see7.3) and is associated with the FIELD REPLACEABLE UNIT CODE field returned by the REQUEST SENSE command.NOTE 51 The FIELD REPLACEABLE UNIT CODE field in the sense data provides for 255 possible codes, while the pagecode field provides for only 127 possible codes. For that reason it is not possible to return ASCII information pagesfor the upper code values.The PAGE LENGTH field specifies the length of the following page data. If the allocation length of the CDB is toosmall to transfer all of the page, the page length shall not be adjusted to reflect the truncation.The ASCII LENGTH field specifies the length in bytes of the ASCII INFORMATION field that follows. If the allocationlength is less than the length of the data to be returned, the ASCII length shall not be adjusted to reflect thetruncation. A value of zero in this field indicates that no ASCII information is available for the specified page code.The ASCII INFORMATION field contains ASCII information concerning the field replaceable unit identified by the pagecode. The data in this field shall be formatted in one or more character string lines. Each line shall contain onlygraphic codes (i.e., code values 20h through 7Eh) and shall be terminated with a NULL (00h) character.The contents of the vendor specific information field is not defined in this standard.dpANS SCSI Primary Commands - 2 (SPC-2) 209
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