User Manual

SCSI Commands Reference Manual, Rev. J 485
www.seagate.com Parameters for direct access devices
UASK_SUP (Unit Attention Sense Key Supported) bit
1 A unit attention condition sense key specific data supported (UASK_SUP) bit set to one indicates that the device server returns
sense-key specific data for the UNIT ATTENTION sense key (see 2.4.1.1.4.6).
0 A UASK_SUP bit set to zero indicates that the device server does not return sense-key specific data for the UNIT ATTENTION sense key.
GROUP_SUP (Grouping Function Supported) bit
1 A grouping function supported (GROUP_SUP) bit set to one indicates that the grouping function (see SBC-4) is supported by the device
server.
0 A GROUP_SUP bit set to zero indicates that the grouping function is not supported.
PRIOR_SUP (Priority Supported) bit
1 A priority supported (PRIOR_SUP) bit set to one indicates that task priority (see SAM-5) is supported by the logical unit.
0 A PRIOR_SUP bit set to zero indicates that task priority is not supported.
HEADSUP (Head of Queue Supported) bit
1 A head of queue supported (HEADSUP) bit set to one indicates that the HEAD OF QUEUE task attribute (see SAM-5) is supported by the
logical unit.
0 A HEADSUP bit set to zero indicates that the HEAD OF QUEUE task attribute is not supported. If the HEADSUP bit is set to zero, applica-
tion clients should not specify the HEAD OF QUEUE task attribute as an Execute Command procedure call argument.
ORDSUP (Ordered Supported) bit
1 An ordered supported (ORDSUP) bit set to one indicates that the ORDERED task attribute (see SAM-5) is supported by the logical unit.
0 An ORDSUP bit set to zero indicates that the ORDERED task attribute is not supported. If the ORDSUP bit is set to zero, application clients
should not specify the ORDERED task attribute as an Execute Command procedure call argument.
SIMPSUP (Simple Supported) bit
1 A simple supported (SIMPSUP) bit set to one indicates that the SIMPLE task attribute (see SAM-5) is supported by the logical unit. Logical
units that support the full task management model (see SAM-5) shall set the SIMPSUP bit to one.
0 A SIMPSUP bit set to zero indicates that the SIMPLE task attribute is not supported. If the SIMPSUP bit is set to zero, application clients
should not specify the SIMPLE task attribute as an Execute Command procedure call argument.
WU_SUP bit
0 A write uncorrectable supported (WU_SUP) bit set to zero indicates that the device server does not support application clients setting
the WR_UNCOR bit to one in the WRITE LONG command (see 3.72).
1 A WU_SUP bit set to one indicates that the device server supports application clients setting the WR_UNCOR bit to one in the WRITE
LONG command.
CRD_SUP bit
0 A correction disable supported (CRD_SUP) bit set to zero indicates that the device server does not support application clients setting
the COR_DIS bit to one in the WRITE LONG command (see 3.72).
1 A CRD_SUP bit set to one indicates that the device server supports application clients setting the COR_DIS bit to one in the WRITE LONG
command.
NV_SUP bit
1 An NV_SUP bit set to one indicates that the device server supports a non-volatile cache and that the applicable command standard
defines features using this cache.
0 An NV_SUP bit set to zero indicates that the device server may or may not support a non-volatile cache.
V_SUP bit
1 A V_SUP bit set to one indicates that the device server supports a volatile cache and that the applicable command standard defines fea-
tures using this cache (e.g., the FUA bit in SBC-4).
0 An V_SUP bit set to zero indicates that the device server may or may not support a volatile cache.