IBM IC35L036UWDY10 Hard Drive Specifications - Page 164

REPORT DEVICE IDENTIFIER A3h, Reserved = 0, VU = 0, Allocation Length, Service Action = 05h

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8.26 REPORT DEVICE IDENTIFIER (A3h) Byte 0 1 2 3 4 5 6 | 9 10 11 Bit 7 6 5 4 3 2 1 0 Command Code = A3h Reserved = 0 Service Action = 05h Reserved = 0 Reserved = 0 Reserved = 0 Reserved = 0 (MSB) Allocation Length (LSB) Reserved = 0 VU = 0 Reserved = 0 FLAG LINK Figure 147. REPORT DEVICE IDENTIFIER The REPORT DEVICE IDENTIFIER command requests that the drive send device identification information to the application client. The ALLOCATION LENGTH field indicates how much space has been reserved for the returned parameter data. If the length is not sufficient to contain all the parameter data, the first portion of the data is returned. This is not considered an error. The actual length of the parameter data is available in the IDENTIFIER LENGTH field in the parameter data. If the remainder of the parameter data is required, the application client should send a new REPORT DEVICE IDENTIFIER command with an ALLOCATION LENGTH field large enough to contain all the data. The REPORT DEVICE IDENTIFIER parameter list contains a four-byte field that contains the length in bytes of the parameter list and the identifier of the logical unit. Ultrastar 146Z10 hard disk drive specifications 148

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8.26 REPORT DEVICE IDENTIFIER (A3h)
LINK
FLAG
Reserved = 0
VU = 0
11
Reserved = 0
10
(MSB)
Allocation Length
(LSB)
6
|
9
Reserved = 0
5
Reserved = 0
4
Reserved = 0
3
Reserved = 0
2
Service Action = 05h
Reserved = 0
1
Command Code = A3h
0
0
1
2
3
4
5
6
7
Bit
Byte
Figure 147. REPORT DEVICE IDENTIFIER
The REPORT DEVICE IDENTIFIER command requests that the drive send device identification
information to the application client.
The ALLOCATION LENGTH field indicates how much space has been reserved for the returned para-
meter data. If the length is not sufficient to contain all the parameter data, the first portion of the data is
returned. This is not considered an error. The actual length of the parameter data is available in the
IDENTIFIER LENGTH field in the parameter data. If the remainder of the parameter data is required, the
application client should send a new REPORT DEVICE IDENTIFIER command with an
ALLOCATION LENGTH field large enough to contain all the data.
The REPORT DEVICE IDENTIFIER parameter list contains a four-byte field that contains the length in
bytes of the parameter list and the identifier of the logical unit.
Ultrastar 146Z10 hard disk drive specifications
148