1.0Introduction

This manual describes the functional, mechanical and interface specifications for the following Seagate DB35.3 Series Serial ATA model drives:

ST3750640SCE ST3500830SCE ST3320820SCEST3250820SCE

ST3750840SCE ST3400820SCE ST3300820SCE

These drives provide the following key features:

•7,200 RPM spindle speed.

•High instantaneous (burst) data-transfer rates (up to 150 Mbytes per second).

•Tunneling Magnetoresistive (TMR) recording heads.

•State-of-the-art cache and on-the-fly error-correction algorithms.

•Native Command Queueing with command ordering to increase performance in demanding applications.

•Full-track multiple-sector transfer capability without local processor intervention.

•Quiet operation.

•SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns.

•Support for S.M.A.R.T. drive monitoring and reporting.

•Supports latching SATA cables and connectors.

DB35.3 Series Serial ATA Product Manual, Rev. D

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Seagate ST3250820SCE, ST3300820SCE, ST3750640SCE, ST3750840SCE, ST3400820SCE, ST3320820SCE, ST3500830SCE manual Introduction
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ST3400820SCE, ST3300820SCE, ST3750840SCE, ST3250820SCE, ST3750640SCE specifications

Seagate’s series of hard drives, including the ST3320820SCE, ST3500830SCE, ST3750640SCE, ST3250820SCE, and ST3750840SCE, comprise a robust lineup designed for both consumer and professional use.

The ST3320820SCE model features a storage capacity of 320GB and operates at a rotational speed of 7200 RPM, allowing for faster data access and improved overall performance. This drive is equipped with SATA interface, providing higher data transfer rates and enhanced connectivity options. Its 8MB cache enhances read and write speeds, thus making it suitable for multitasking environments.

In comparison, the ST3500830SCE offers a larger capacity with 500GB storage. This drive is also based on the same 7200 RPM speed standard, ensuring optimal performance for both gaming applications and data-heavy tasks. The SATA interface remains a central feature, promoting seamless integration into a range of PC configurations.

The ST3750640SCE takes the storage capabilities further, offering a generous 750GB space. It shares similar technological advancements such as the SATA interface and 7200 RPM speed, making it ideal for users needing extensive storage for multimedia files, software applications, and backups. The reliable performance alongside its increased capacity makes it a favored choice among professionals.

The ST3250820SCE model is targeted towards those needing a balance between performance and cost-efficiency. With a 250GB capacity, this drive provides ample space for everyday usage while maintaining a robust 7200 RPM speed and 8MB cache. This makes it an ideal option for entry-level systems and general-purpose computing.

Lastly, the ST3750840SCE offers up to 750GB of space, similar to the ST3750640SCE, but also incorporates advanced technologies for enhanced reliability and durability. This includes features like Seagate's Smart Align technology, which optimizes the drive's performance by efficiently managing data, especially with modern 4K sector drives.

Overall, these Seagate models cater to a wide spectrum of users, from casual home users to professionals requiring reliable and high-performance storage solutions. With a combination of speed, capacity, and innovative technologies, they stand out as solid choices in the hard drive market.
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