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 2:

Drive specifications

 

 

 

 

 

 

 

Drive specification

ST9320322AS

ST9160312AS

ST9120312AS

 

 

 

 

Formatted Gbytes (512 bytes/sector)*

320

160

120

 

 

 

 

Guaranteed sectors

625,142,448

312,581,808

234,441,648

 

 

 

 

Bytes per sector

512

 

 

 

 

 

 

Physical read/write heads

4

2

2

 

 

 

 

 

Discs

 

2

1

1

 

 

 

 

Cache (Mbytes)

8

 

 

 

 

 

 

Recording density in BPI (bits/inch max)

1,337k

 

 

 

 

 

 

Track density TPI (tracks/inch max)

191.5k

 

 

 

 

 

 

Areal density (Gbits/inch2 max)

253

 

 

Spindle speed (RPM)

5,400

 

 

 

 

 

 

Internal transfer rate (Mbits/sec max)

830

 

 

 

 

 

 

I/O data transfer rate (Gbits/sec max)

3.0

 

 

 

 

 

ATA data-transfer modes supported

SATA 1.5/3.0, 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 (0.374 +/- .0078 inches)

 

 

 

 

 

Width (max)

 

69.85 +/- 0.249 mm (2.75 +/- 0.0098 inches)

 

 

 

 

 

Length (max)

 

100.33 +/- 0.25 mm (3.95 +/- 0.010 inches)

 

 

 

 

 

Weight (typical)

98 grams (0.212 lb)

93 grams (0.205 lb)

 

 

 

 

 

Average latency (msec)

5.6

 

 

 

 

 

 

Power-on to ready (sec typical)

3.4

 

 

 

 

 

 

Standby to ready (sec typical)

3.2

 

 

 

 

 

 

Track-to-track seek time, read (msec typical)

1.5

 

 

 

 

 

 

Average seek, read (msec typical)

11.0

 

 

 

 

 

 

Full-stroke seek, read (msec)

24 (typical)

 

 

 

 

 

 

Startup current, +5V (max)

1.0 amps

 

 

 

 

 

 

Seek power (typical)

2.0 watts

 

 

 

 

 

Read/write power (typical)

Read: 1.6 watts; Write: 1.9 watts

 

 

 

 

 

 

Momentus 5400 FDE.3 SATA Product Manual, Rev. A

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Seagate ST9120312AS, ST9320322AS, ST9160312AS manual Drive specifications, Specification summary table

ST9120312AS, ST9160312AS, ST9320322AS specifications

The Seagate ST9320322AS, ST9160312AS, and ST9120312AS are hard disk drives (HDDs) designed for reliable storage solutions in various computing environments. These drives belong to the Barracuda line, known for their high performance and robust features.

The ST9320322AS is a 320GB, 2.5-inch SATA hard drive that operates at a speed of 7200 RPM. It has a 16MB cache buffer, enhancing data access speeds and allowing for efficient multi-tasking. This drive is particularly suitable for laptops, external drives, and other applications requiring high-capacity storage paired with portability. Its low power consumption makes it an ideal choice for mobile systems, contributing to longer battery life.

On the other hand, the ST9160312AS is a 160GB version, also a 2.5-inch SATA HDD running at 7200 RPM. Like the ST9320322AS, it features a 16MB cache, which optimizes performance for everyday computing tasks. This model is often utilized in gaming consoles and entry-level laptops, offering a balance of performance and affordability. With a height of only 9.5mm, it is designed to fit in ultrathin laptops while providing ample storage space for user data, applications, and multimedia files.

The ST9120312AS further reduces storage capacity to 120GB, while maintaining the same rotational speed of 7200 RPM. This HDD is designed for users looking for reliable, cost-effective storage solutions without compromising on performance. Like its counterparts, it features a 16MB cache and operates efficiently, making it suitable for applications that require moderate data storage, such as basic computing tasks and media storage.

All three models leverage Seagate’s advanced recording technology, which enhances data integrity and reliability. They also incorporate sophisticated error recovery tools that help prevent data loss, ensuring longevity and durability under various operating conditions. These drives support the SATA interface, which provides high-speed data transfer rates, making them compatible with a wide range of computing devices.

In conclusion, the Seagate ST9320322AS, ST9160312AS, and ST9120312AS hard drives represent a strong selection for users in need of reliable, efficient, and compact storage solutions. With their combination of high performance, energy efficiency, and advanced technologies, they continue to serve a vital role in modern computing architectures.