HP 220mx Guía de usuario Pagina 177

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SCSI-2 Drive Command Set
Verify (Group 5) Command (AFH)
Chapter 22-140
Verify (Group 5) Command (AFH)
This command verifies the data starting from the specified logical block
address by checking the error correction code.
This command has two modes of operation, depending on the value of the
BV bit. If the Blk Vfy bit is set to 0, it verifies previously written data
integrity starting at the specified Logical Block Address by reading the
data and checking the Error Correction Code. The verification threshold
is set to approximately half of the error correction capability.
Table 2-126 Verify (Group 5) CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (AFH)
1 Logical Unit Number
(0)
DPO Rsvd
(0)
Blk
Vfy
Rsvd
(0)
RelAdr
2 Logical Block Address (MSByte
3 Logical Block Address
4 Logical Block Address
5 Logical Block Address (LSByte)
6 Verification Length (MSByte)
7 Verification Length
8 Verification Length
9 Verification Length (LSByte)
10 Reserved (0)
11 Reserved (0) Flag Link
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