2.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power.

2.1Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or defi- nition, see the appropriate section of this manual.

Table 1:

Drive specifications

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ST9500420AS

ST9320423AS

ST9250410AS

ST9160412AS

ST9120410AS

ST980412AS

Drive specification

ST9500420ASG

ST9320423ASG

ST9250410ASG

ST9160412ASG

ST9120410ASG

ST980412ASG

 

 

 

 

 

 

 

 

 

Formatted GB (512 bytes/sector)*

500

 

320

250

 

160

120

80

 

 

 

 

 

 

 

 

 

Guaranteed sectors

976,773,168

 

625,142,448

488,397,168

 

312,581,808

234,441,648

156,301,488

 

 

 

 

 

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Physical read/write heads

4

 

3/4

2

 

2

1/2

1

 

 

 

 

 

 

 

 

 

 

Discs

 

2

 

2

1

 

1

1

1

 

 

 

 

 

 

 

 

 

Cache (Mbytes)

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Recording density in BPI (max)

1490k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Track density TPI (max)

265k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Areal density (Gb/in2 max)

394

 

 

 

 

 

 

 

Spindle speed (RPM)

7200

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average latency (msec)

4.17

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Internal transfer rate (Gb/s max)

1.23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

I/O data transfer rate (Gb/s max)

3.0

 

 

 

 

 

 

 

 

 

 

 

 

ATA data-transfer modes supported

SATA 1.0, Serial ATA Revision 2.6

 

 

 

 

 

PIO modes 0–4

 

 

 

 

 

 

 

 

Multiword DMA modes 0–2

 

 

 

 

 

 

 

Ultra DMA modes 0–6

 

 

 

 

 

 

 

 

 

 

 

Height (max)

 

9.5 +/- 0.2 mm (0.370 +/- .008 in)

 

 

 

 

 

 

 

 

 

Width (max)

 

69.85 +/- 0.25 mm (2.750 +/- 0.010 in)

 

 

 

 

 

 

 

 

 

Length (max)

 

100.35 +0.20 / -0.25 mm (3.951 +0 .008 / -0.010

in)

 

 

 

 

 

 

 

 

 

Weight (max)

 

110 grams (0.238 lb)

105 grams (0.227 lb)

 

 

 

 

 

 

 

 

 

 

 

Power-on to ready (sec typical)

4.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standby to ready (sec typical)

3.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Track-to-track seek time, read

1.5

 

 

 

 

 

 

 

(ms typical)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average seek, read (ms typical)

11.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average seek, write (ms typical)

13.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Startup current, +5V (max)

1.0 amps

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Seek power (typical)

2.2 watts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Momentus 7200.4 SATA Product Manual, Rev. C

3

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Seagate ST9160314ASIM, ST980412ASG, ST9500420ASG, ST9320423AS manual Drive specifications, Specification summary table
Page 8 Page 10

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.
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