Seagate Medalist 2160N (ST52160N), Руководство по эксплуатации продукта

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3.6.7.1 Defect list header
The defect data always begins with a 4-byte header, followed by an
8-byte descriptor for each defect. The defect list header format is
described below.
Bytes
Bits
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0
1 0 0 0 PList GList Defect list format
2–3 Defect List Length
Byte 1 If the PList bit is 1, the defect data contains the primary
defect list. If the PList bit is 0, the defect data does not
contain the primary defect list.
If the GList bit is 1, the defect data contains the grown defect
list. If the GList bit is 0, the defect data does not contain the
grown defect list.
The defect list format field is described in Section 3.6.7. on
page 68.
Bytes 2–3
The defect list length always specifies the length of the
defect data in bytes, even if the allocation length (in the
CDB) is not large enough to accommodate all the defect
descriptors. If the PList and GList bits are 0, no defect
descriptor bytes are sent to the initiator and the defect list
length is 0.
3.6.8 Write Data Buffer command (3B
H
)
The Write Data Buffer command supports several different features. It
can be used with the Read Data Buffer command to diagnose problems
in the drive’s data buffer memory and to test the integrity of the SCSI bus.
You can also use the Write Data Buffer command to download microcode
to the buffer and to save it in flash memory.
Note. This command treats the buffer as a single segment, regardless
of the number of segments specified in Caching page 08
H
.
(Caching page 08
H
is described in Section C.6.3. on page 110.)
70 Medalist Pro 2160N/2160WC Product Manual, Rev. A