2.2Formatted capacity

Model

Formatted capacity*

Guaranteed sectors

Bytes per sector

 

 

 

 

ST9500420AS and ST9500420ASG

500 Gbytes

976,773,168

512

 

 

 

 

ST9320423AS and ST9320423ASG

320 Gbytes

625,142,448

512

 

 

 

 

ST9250410AS and ST9250410ASG

250 Gbytes

488,397,168

512

 

 

 

 

ST9160412AS and ST9160412ASG

160 Gbytes

312,581,808

512

 

 

 

 

ST9120410AS and ST9120410ASG

120 Gbytes

234,441,648

512

 

 

 

 

ST980412AS and ST980412ASG

80 Gbytes

156,301,488

512

 

 

 

 

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

2.3Default logical geometry

Cylinders

Read/write heads

Sectors per track

 

 

 

16,383

16

63

 

 

 

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

2.4Physical organization

Drive model

Read/write heads

Number of discs

 

 

 

ST9500420AS and ST9500420ASG

4

2

 

 

 

ST9320423AS and ST9320423ASG

3/4

2

 

 

 

ST9250410AS and ST9250410ASG

2

1

 

 

 

ST9160412AS and ST9160412ASG

2

1

 

 

 

ST9120410AS and ST9120410ASG

1/2

1

 

 

 

ST980412AS and ST980412ASG

1

1

 

 

 

Momentus 7200.4 SATA Product Manual, Rev. C

5

Page 11
Image 11
Seagate ST9120410ASG, ST980412ASG manual Formatted capacity, Default logical geometry, Physical organization, LBA mode

ST903203N1A2ASRK, ST905003N1A1ASRK, ST9160412AS, ST9250410ASG, ST9160412ASG specifications

Seagate technology has long been at the forefront of data storage solutions, and its line of hard drives exemplifies the blend of reliability, performance, and storage capacity. Among these, the Seagate ST9500420AS, ST9120410ASG, ST9320423AS, ST90250N1A1ASRK, and ST980412AS stand out as quality options suitable for various computing needs.

The Seagate ST9500420AS is a 500GB 2.5-inch SATA hard drive designed primarily for laptop users. It features a rotational speed of 5400 RPM, balancing performance with energy efficiency. The adoption of Advanced Format technology enhances its sector size, allowing for improved data integrity and capacity. Additionally, the drive supports Native Command Queuing (NCQ), which can optimize the drive's performance by managing multiple commands more efficiently.

Another notable model is the ST9120410ASG, a 120GB hard drive that caters to users seeking a compact yet efficient storage solution. Primarily used in laptops and external enclosures, this drive also operates at 5400 RPM. Combining a 2.5-inch form factor with a SATA interface, it allows for swift data transfers while maintaining low power consumption, which is essential for portable devices.

The ST9320423AS is another 2.5-inch hard drive, boasting a capacity of 320GB. This drive is notable for its shock protection features, which safeguard data against physical impacts, making it ideal for mobile computing environments. Like its counterparts, it also utilizes SATA technology and operates efficiently, ensuring that users have access to reliable storage without compromising on performance.

For more specialized applications, the ST90250N1A1ASRK provides a substantial 250GB capacity in a compact form factor. Engineered for demanding environments, this drive showcases Seagate's commitment to creating robust, long-lasting products. It combines speed with durability, representing an excellent choice for systems requiring frequent read/write operations.

Finally, the ST980412AS is a 80GB variant that remains a staple for users needing reliable data storage without excessive capacity. This drive supports similar technologies as its peers, ensuring effective performance for everyday computing tasks. Its lightweight design and efficient power utilization make it suitable for both personal and professional use.

In summary, these Seagate hard drives embody a blend of advanced technologies, extensive capacities, and reliability. Whether for casual use, professional applications, or portable computing, each model offers unique features tailored to meet diverse user needs. With a history of innovation, Seagate remains a leader in the data storage sector, ensuring that users have access to high-quality solutions across the board.