Seagate ST4000VN003, Руководство по эксплуатации продукта

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Seagate NAS HDD +SRS Product Manual, Rev. C 26
www.seagate.com SATA Interface
4.3.1 Identify Device command
The Identify Device command (command code EC
H
) transfers information about the drive to the host following
power up. The data is organized as a single 512-byte block of data, whose contents are shown in on page 24. All
reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or vary with the state
of the drive.
The following commands contain drive-specific features that may not be included in the SATA specification.
Table 8 Identify Device commands
Word Description Value
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
0C5A
H
1 Number of logical cylinders 16,383
2 ATA-reserved 0000
H
3 Number of logical heads 16
4 Retired 0000
H
5 Retired 0000
H
6 Number of logical sectors per logical track: 63 003F
H
7–9 Retired 0000
H
10–19 Serial number: (20 ASCII characters, 0000
H
= none) ASCII
20 Retired 0000
H
21 Retired 0400
H
22 Obsolete 0000
H
23–26
Firmware revision (8 ASCII character string,
padded with blanks to end of string)
x.xx
27–46
Drive model number: (40 ASCII characters,
padded with blanks to end of string)
47
(Bits 7–0) Maximum sectors per interrupt on
Read multiple and Write multiple (16)
8010
H
48 Reserved 0000
H
49
Standard Standby timer, IORDY supported
and may be disabled
2F00
H
50 ATA-reserved 0000
H
51 PIO data-transfer cycle timing mode 0200
H
52 Retired 0200
H
53 Words 54–58, 64–70 and 88 are valid 0007
H
54 Number of current logical cylinders xxxx
H
55 Number of current logical heads xxxx
H
56 Number of current logical sectors per logical track xxxx
H
57–58 Current capacity in sectors xxxx
H
59
Number of sectors transferred during
a Read Multiple or Write Multiple command
xxxx
H