Write T10 PI (16) Command
August 2016 Commands 237
Write T10 PI (16) Command
The Write T10 PI (16) command (see TABLE 3-177) transfers one or more blocks of
data from the host to tape. After successful completion of a write operation, the tape
is positioned after the last block written. Each block transferred includes user data
and protection information.
The Write T10 PI (16) command shall only be processed if T10 PI Protection Method
is enabled and the LBP_W control bit is set (see Control Data Protection Mode Page)..
TABLE 3-177 Write T10 PI (16) Command
Byte
Bit
76543210
0 Operation Code (9Ah)
1 GRDC APPTC REFTC Reserved FIXED
2 (MSB)
EXPECTED INITIAL REFERENCE TAG
(LSB)
3
4
5
6 (MSB) EXPECTED APPLICATION TAG
7 (LSB)
8 (MSB) APPLICATION TAG MASK
9 (LSB)
10 (MSB)
TRANSFER LENGTH
(LSB)
11
12
13
14 Reserved
15 CONTROL
Parameter Value
GRDC: Guard Check
1 = Check the Guard field of the PI.
0 = Do not check the Guard field of the PI.
APPTC: Application Tag Check
1 = Check the Application Tag field of the PI.
0 = Do not check the Application Tag field of the PI.
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