2.1Formatted capacity

Model

Formatted

Guaranteed

Bytes per sector

capacity*

sectors

 

 

 

 

 

 

ST31000340AS

1000 Gbytes

1,953,525,168

512

ST31000640AS

 

 

 

 

 

 

 

ST3750330AS

750 Gbytes

1,465,149,168

512

ST3750630AS

 

 

 

ST3640330AS

640 Gbytes

1,250,284,896

512

ST3640630AS

 

 

 

ST3500320AS

500 Gbytes

976,773,168

512

ST3500620AS

ST3500820AS

 

 

 

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

2.1.1LBA 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.

2.2Default 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.

2.3Recording and interface technology

Interface

Serial ATA (SATA)

 

 

Recording method

Perpendicular

 

 

Recording density (kbits/inch max)

1090

 

 

Track density (ktracks/inch avg)

150

 

 

Areal density (Gbits/inch2 avg)

164

Spindle speed (RPM)

7,200 ± 0.2%

 

 

Internal data transfer rate (Mbits/sec max)

1287

 

 

Sustained data transfer rate (Mbytes/sec max)

105

 

 

I/O data-transfer rate (Mbytes/sec max)

300

 

 

10

Barracuda 7200.11 Serial ATA Product Manual, Rev. G

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Seagate ST3500620AS manual Formatted capacity, Default logical geometry, Recording and interface technology, LBA mode

ST3640630AS, ST3500820AS, ST3500320AS, ST3500620AS, ST31000640AS specifications

Seagate has long been a prominent player in the hard drive industry, and its line of SATA drives, including the ST3640330AS, ST3750330AS, ST3750630AS, ST31000340AS, and ST31000640AS, showcases a blend of performance, reliability, and advanced technology. These drives cater to various user needs, from consumer desktops to enterprise applications.

The ST3640330AS and ST3750330AS models are designed with a 7200 RPM spinning speed, ensuring fast data throughput for gaming, multimedia, and everyday computing tasks. With a SATA interface and compatibility with the latest systems, these drives are ideal for users seeking efficient storage solutions. The ST3640330AS provides 640 GB of storage, while the ST3750330AS boasts a generous 750 GB capacity, offering ample space for large files and applications.

Moving to the ST3750630AS, this model continues the trend of high performance, offering 750 GB of storage but enhanced with Seagate’s advanced error-correcting technology. It also features an updated cache architecture that optimizes read and write speeds while minimizing latency. This drive is particularly beneficial for users who require reliable backups and quick access to data.

The ST31000340AS and ST31000640AS are both part of Seagate’s 1 TB series and are engineered for durability and longevity. The ST31000340AS features traditional SATA technology, providing users with a balance between cost and performance. On the other hand, the ST31000640AS integrates improved power management features that result in lower energy consumption without compromising performance. This makes it a suitable choice for environmentally-conscious consumers or businesses looking to reduce operational costs.

All models feature Seagate's proprietary technologies such as SoftSonic drives, which result in quieter operation, and advanced power management capabilities that extend the lifespan of the hard drives. They are equipped with robust error recovery and data security features, ensuring data integrity and protecting against data loss.

Overall, the Seagate ST3640330AS, ST3750330AS, ST3750630AS, ST31000340AS, and ST31000640AS drives represent a comprehensive range of storage solutions that combine capacity, speed, and cost-effectiveness, making them a popular choice for a variety of users, from casual consumers to demanding enterprise environments.