Identify Device Command - Seagate Exos Enterprise ST8000NM000A Product Manual

6.3.1

Identify Device command

The Identify Device command (command code EC
organized as a single 512-byte block of data, whose contents are shown in
set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive.
parameter settings.
The following commands contain drive-specific features that may not be included in the Serial ATA specification
Table 13 Identify Device commands
Word Description
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
0 • Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
1 Number of logical cylinders
2 ATA-reserved
3 Number of logical heads
4 Retired
5 Retired
6 Number of logical sectors per logical track: 63
7–9 Retired
10–19 Serial number: (20 ASCII characters, 0000
20-21 Retired
22 Obsolete
23–26 Firmware revision (8 ASCII character string, padded with blanks to end of string)
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)
48 Trusted computing feature set options
49 Standard Standby timer, IORDY supported and may be disabled
50 ATA-reserved
51 PIO data-transfer cycle timing mode
52 Retired
53 Words 54–58, 64–70 and 88 are valid
54-58 Obsolete
59 Number of sectors transferred during a Read Multiple or Write Multiple command
Total number of user-addressable LBA sectors available
Section 2.2
(see
*Note: The maximum value allowed in this field is: 0FFFFFFFh (268,435,455 sectors, 137GB). Drives
60–61
with capacities over 137GB will have 0FFFFFFFh in this field and the actual number of user-address-
able LBAs specified in words 100-103. This is required for drives that support the 48-bit addressing
feature.
62 Retired
63 Multiword DMA active and modes supported (see note following this table)
64 Advanced PIO modes supported (modes 3 and 4 supported)
65 Minimum multiword DMA transfer cycle time per word (120 ns)
66 Recommended multiword DMA transfer cycle time per word (120 ns)
67 Minimum PIO cycle time without IORDY flow control (120 ns)
68 Minimum PIO cycle time with IORDY flow control (120 ns)
69 Additional supported
70–74 ATA-reserved
75 Queue depth
76 Serial ATA capabilities
Seagate Exos 7E8 SATA Product Manual, Rev. K
) transfers information about the drive to the host following power up. The data is
H
= none)
H
for related information)
Table 12 on page 31. All reserved bits or words should be
See Section 2.0 on page 6
Value
0C5A
16,383
C837
16
0000
0000
003F
0000
Serial number in ASCII
0000
0000
SN03
8010
4000
2F00
0000
0200
0200
0007
xxxx
H
xxxx
H
0FFFFFFFh*
0000
x407
H
0003
0078
0078
0078
0078
0008
0000
001F
8D0E
for default
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
33