2.4

Physical characteristics

 

 

 

Maximum height (1000-500 GB models)

 

26.1 mm (1.028 inches)

 

 

 

 

Maximum width

 

101.6 mm (4.000 +/- 0.010 inches)

 

 

 

Maximum length

 

146.99 mm (5.787 inches)

 

 

 

 

Typical weight

 

 

 

 

1000 GB models

 

677 grams (1.493 lbs)

 

750 GB models

 

633 grams (1.396 lbs)

 

500 GB models

 

543 grams (1.199 lbs)

 

 

 

 

Cache buffer

 

 

 

 

ST31000340AS, ST3750330AS and ST3500320AS

 

32

Mbytes (32,768 kbytes)

 

ST31000640AS, ST3750630AS and ST3500620AS

 

16

Mbytes (16,384 kbytes)

 

ST3500820AS

 

8

Mbytes (8,192 kbytes)

 

 

 

 

 

2.5Seek time

Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications in the table below are defined as follows:

•Track-to-track seek time is an average of all possible single-track seeks in both directions.

•Average seek time is a true statistical random average of at least 5,000 measurements of seeks between random tracks, less overhead.

Typical seek times (msec)

Read

Write

 

 

 

Track-to-track (1000 GB & 750 GB models)

<1.0

<1.2

 

 

 

Track-to-track (500 GB models)

<0.8

<1.0

 

 

 

Average

<8.5

<9.5

 

 

 

Average latency:

4.16

 

 

 

 

*Measured in performance mode.

**Measured in quiet mode.

Note. These drives are designed to consistently meet the seek times represented in this manual. Physical seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted values. However, due to the manner in which these drives are formatted, benchmark tests that include command overhead or measure logical seeks may produce results that vary from these specifications.

2.6

Start/stop times

 

 

 

 

 

 

 

 

 

 

1000 GB

750 GB

500 GB

 

 

Models

Models

Models

 

 

 

 

Power-on to Ready (sec)

20 (max)

 

 

 

 

 

 

Power-on to Ready (sec) (2.0 Amp Code Option)

17 (max)

 

 

 

 

 

 

Standby to Ready (sec)

15 (max)

 

14 (max)

 

 

 

 

Ready to spindle stop (sec)

10 (max)

 

 

 

 

 

 

 

Barracuda 7200.11 Serial ATA Product Manual, Rev. C

9

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Seagate ST31000640AS manual Physical characteristics, Seek time, Start/stop times, Typical seek times msec Read Write
Page 14 Page 16

ST3500820AS, ST3500320AS, ST3500620AS, ST31000640AS, ST31000340AS 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.
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