User Manual

SCSI Commands Reference Manual, Rev. J 99
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
If the logical unit supports the BQUE bit, the CMDQUE bit and BQUE bit indicate whether the logical unit supports the full task management
model as described in
table 64.
T10 VENDOR IDENTIFICATION field
The T10 VENDOR IDENTIFICATION field contains eight bytes of left-aligned ASCII data (see 5.4.2) identifying the vendor of the product. The T10
vendor identification shall be one assigned by INCITS. Bytes 8 through 15 contain the ASCII characters that represent “SEAGATE” (53h 45h 41h
47h 41h 54h 45h 20h (space)).
PRODUCT IDENTIFICATION
The PRODUCT IDENTIFICATION field contains sixteen bytes of left-aligned ASCII data (see 5.4.2) defined by Seagate. Bytes 16 through 31 indi-
cate the drive model with 20h (space) used as a filler. The table below is an example of drive test data returned by the drive. Bytes 16 and 17 will
contain 53 54 for all drive models.
Refer to the applicable Seagate product manual to get the actual text string.
PRODUCT REVISION LEVEL field
The PRODUCT REVISION LEVEL field contains four bytes of left-aligned ASCII data defined by Seagate. Bytes 32 through 35 contain the four
ASCII digits representing the last four digits of the product Firmware Release number.
VERSION DESCRIPTOR fields
The VERSION DESCRIPTOR fields provide for identifying up to eight standards to which the SCSI target device claims conformance. The value in
each VERSION DESCRIPTOR field shall be selected from the Version Descriptor Values Table in the current SPC standard. All version descriptor
values not listed in table 62 are reserved. Technical Committee T10 of INCITS maintains an electronic copy of the information in the Version
Descriptor Values Table on its world wide web site (http://www.t10.org/). In the event that the T10 world wide web site is no longer active,
access may be possible via the INCITS world wide web site (http://www.incits.org), the ANSI world wide web site (http://www.ansi.org), the IEC
site (http://www.iec.ch/), the ISO site (http://www.iso.ch/), or the ISO/IEC JTC 1 web site (http://www.iso.ch/). It is recommended that the first
version descriptor be used for the SCSI architecture standard, followed by the physical transport standard if any, followed by the SCSI transport
protocol standard, followed by the appropriate SPC version, followed by the device type command set, followed by a secondary command set
if any. Refer to the latest SPC version for a complete list of descriptor values.
Copyright Notice field
Seagate uses bytes 96 - 143 to provide a copyright notice that begins “Copyright (c) XXXX Seagate All rights reserved,” where “XXXX” indicates
the year the drive’s firmware code was built (for example: 2016.
Table 64 BQue and CmdQue bit combinations
BQue CmdQue Description
0 0
Obsolete
0 1
Full task management model supported
1 0
Basic task management model supported
1 1
Illegal combination of BQUE and CMDQUE bits