Command name

Command code (in hex)

 

 

Standby Immediate

94h or E0h

 

 

ATA-standard security commands

 

 

 

Security Set Password

F1h

 

 

Security Unlock

F2h

 

 

Security Erase Prepare

F3h

 

 

Security Erase Unit

F4h

 

 

Security Freeze Lock

F5h

 

 

Security Disable Password

F6h

 

 

4.3.1Identify Device command

The Identify Device command (command code ECH) 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 the table on page 27. 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. See Section 2.0 on page 3 for default parameter settings.

The following commands contain drive-specific features that may not be included in the Serial ATA specifica- tion.

Word

Description

Value

 

 

 

 

Configuration information:

0C5AH

0

• Bit 15: 0 = ATA; 1 = ATAPI

 

• Bit 7: removable media

 

 

• Bit 6: removable controller

 

 

• Bit 0: reserved

 

 

 

 

1

Number of logical cylinders

16,383

 

 

 

2

ATA-reserved

0000H

3

Number of logical heads

16

 

 

 

4

Retired

0000H

5

Retired

0000H

6

Number of logical sectors per logical track: 63

003FH

7–9

Retired

0000H

10–19

Serial number: (20 ASCII characters, 0000H = none)

ASCII

20

Retired

0000H

21

Retired

0400H

22

Obsolete

0000H

23–26

Firmware revision (8 ASCII character string, padded with

x.xx

 

blanks to end of string)

 

 

 

 

Momentus 7200.3 SATA Product Manual, Rev. C

27

Page 32 Page 34
Page 33
Image 33
Seagate ST9750420AS, STBD1000100, 7200.3 Identify Device command, ATA-standard security commands, Word Description Value
Page 32 Page 34

ST9120411AS, ST9120411ASG, ST9250421AS, ST9750420AS, ST9160411AS specifications

Seagate has long been a prominent name in the storage industry, recognized for delivering reliable hard drives that cater to a variety of computing needs. The Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS are notable hard drives that showcase the brand's commitment to performance and efficiency.

The ST9200421AS is a 2.5-inch SATA hard drive that boasts a storage capacity of 200GB. With a spindle speed of 5400 RPM, this model is optimized for low power consumption while maintaining adequate performance for everyday computing tasks. Its 8MB cache enhances data transfer rates, making it suitable for basic computing environments such as entry-level laptops.

Another model, the ST9160411ASG, also operates at a speed of 5400 RPM but offers a slightly larger storage capacity of 160GB. It incorporates advanced error correction technologies that improve data integrity and reliability. This drive is ideal for users looking to upgrade their existing storage without sacrificing battery life or performance in mobile devices.

The ST980411ASG steps up the capacity game with 160GB of storage as well but features Seagate's PowerSave technology that helps extend battery life in laptops. This is particularly beneficial for mobile users who require dependable storage while on the move. Combined with a 5400 RPM speed and 8MB cache, it balances performance with energy efficiency.

The ST9320421ASG offers a more substantial storage option of 320GB, matching the performance characteristics of its predecessors with a 5400 RPM spin rate. This drive includes features like QuietStep technology, which minimizes noise for a smoother user experience, making it excellent for quiet environments and multimedia applications.

Lastly, the ST9320421AS follows suit with similar specifications, catering to users who prioritize additional capacity alongside reliability. This model is ideal for users needing a dependable yet spacious storage solution for their laptops or compact desktops.

Overall, the Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS hard drives exemplify the brand's innovation and commitment to quality. With features designed to enhance performance, efficiency, and user experience, these drives continue to be a solid choice for those seeking reliable storage solutions in various computing environments. With their varying capacities and features, users have the flexibility to select a model that best fits their storage needs while enjoying the reliability that Seagate is known for.
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