Read T10 PI (16) Command
August 2016 Commands 145
Notes:
• Setting GRDC to 0 allows the customer read data to reside in the interface buffer
with no protection! This operation is highly discouraged. The only valid setting of
0 is for diagnostic testing of Read T10PI error checking operations.
• If the device server detects a BLOCK APPLICATION TAG field set to FFFFh, then
the device server disables checking of all other protection information for that
associated protection information interval (single logical user data block) when
reading from the medium.
• Setting of the Fixed bit is allowed only if the fixed block length is not zero. In
fixed block mode, the record size is specified by the block length. The Mode Sense
command reports the fixed block length.
• The physical T10PI record integrity can be verified with the Verify(6) and
Verify(16) commands.
REFTC: Reference Tag Check
1 = Check the Reference Tag field of the PI.
0 = Do not check the Reference Tag field of the PI.
SILI: Suppress Illegal Length Indication
= 0 Check condition status is returned if the record length
does not match Transfer Length. ILI (Illegal Length Indication)
and Valid bits in sense data are set.
In variable block mode, the Information bytes are set to the
Transfer Length minus the actual record size.
In fixed block mode, Information bytes are set to the
Transfer Length minus the number of blocks transferred,
not including the incorrect length block.
= 1 Return Check Condition status only when the actual
record length is larger than transfer length, and the Mode
Sense block length field in not zero.
Note – This option is not allowed if the fixed bit is 1.
FIXED Indicates the block mode for data transfer:
= 0 Variable block mode. Transfer Length is the number of
bytes requested.
= 1 Fixed block mode. Transfer Length is the number of blocks
requested.
EXPECTED INITIAL
REFERENCE TAG:
= The first logical block reference tag.
Subsequent reference tag fields will be plus one.
EXPECTED APPLICATION TAG: = Each logical block application tag field is set by the
application client.
APPLICATION TAG MASK: = This field contains a value that is a bit mask for enabling the
checking of the logical block application tag field.
TRANSFER LENGTH Number of blocks or bytes requested.
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