Product Description
Size: 4TB
From the Manufacturer
Seagate 4TB Desktop HDD
The world's only 4-disk 4TB drive for improved reliability and efficiency.

The Power of One
The Seagate Desktop HDD is the one hard drive for all your desktop applications. One drive for every need, supported by 30 years of trusted performance, reliability and simplicity.

Perfect when you need to:
Build desktop or all-in-one PCs to equip home servers
Create PC-based gaming systems
Implement a desktop RAID
Outfit direct attached external storage devises (DAS)
Build network attached storage devices (NAS)

Proven Quality and Performance
Desktop HDDs are the world's most popular desktop storage solutions. With consistent quality and performance-enhancing innovations and features like native command queuing and perpendicular recording, Seagate delivers time— and time again.

Additionally, Desktop HDDs are produced using the most sophisticated manufacturing process in the industry, with a focus on environmental stewardship. Advanced power modes enables you to save more energy while in idle states—without sacrificing performance. Plus, 70% or more of the materials used to build Desktop HDD drives are recyclable.

Maximizes Hard Drive Storage Densities
Desktop HDD, 1TB-per-disk technology incorporates 340,000 unique tracks in the width of a single inch. This incredible storage density drives new capacity possibilities and lowers your total storage costs.

Seagate AcuTrac technology enables storage densities with accurate reading and writing to nano-sized tracks that are only 75 nanometers wide! That’s about 1/500th the size of the period at the end of this sentence.

The Size and Performance You Want
You get more bang for your buck with the industry's first 1TB-per-disk hard drive technology.

Your drive is up to 45% faster than the last generation thanks to Seagate OptiCache technology. OptiCache technology combines the latest advances in hard drive microprocessors, DRAM, and proprietary caching algorithms resulting in great performance improvements for you.

Go Beyond 2TB with DiscWizard Software
The sure way to get native access to hard drives bigger than 2TB is to adopt the new BIOS standard called UEFI.If you're not there yet, Seagate has an alternative.

Free DiscWizard software from Seagate provides you a means to effectively utilize your 3TB and 4TB Seagate Desktop HDDs, even with Windows XP and using the standard PC BIOS.

Seagate Desktop HDD Technical Specifications
See full specification chart here.

4TB1 3TB1 2TB1 1TB1 500GB1 320GB1 250GB1
Model Number ST4000DM000 ST3000DM001 ST2000DM001 ST1000DM003 ST500DM002 ST320DM000 ST250DM000
Model Name Desktop HDD formerly Barracuda formerly Barracuda formerly Barracuda formerly Barracuda formerly Barracuda formerly Barracuda
Interface Options SATA 6Gb/s NCQ SATA 6Gb/s NCQ SATA 6Gb/s NCQ SATA 6Gb/s NCQ SATA 6Gb/s NCQ SATA 6Gb/s NCQ SATA 6Gb/s NCQ
Performance
SATA Transfer Rates Supported (Gb/s) 6.0/3.0/1.5 6.0/3.0/1.5 6.0/3.0/1.5 6.0/3.0/1.5 6.0/3.0/1.5 6.0/3.0/1.5 6.0/3.0/1.5
Cache, Multisegmented (MB) 64 64 64 64 16 16 16
Spindle Speed (RPM) 5900 7200 7200 7200 7200 7200 7200
Special Features
Seagate OptiCache Technology Yes Yes Yes Yes No No No
Seagate AcuTrac Technology Yes Yes Yes Yes No No No
Seagate SmartAlign Technology Yes Yes Yes Yes No2 No2 No2
How Much Will it Store?
Digital Music (Songs)
Based on 4.096MB song, 128kbps bit rate, 11:1 audio compression ratio 1,000,000 750,000 500,000 250,000 125,000 80,000 62,500
Digital Photos (Images)
Based on 10 Megapixel camera producing 5MB image file size 819,200 614,400 409,600 204,800 102,400 65,536 51,200
HD Video (Hours)
Based on 720p or 1080i output with 8.3Gb/hr recording rate 493 370 247 123 62 39 31
1One gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes when referring to hard drive capacity.
2Seagate ships this drive in both 4K- and 512-byte sectors. SmartAlign technology is included on 4K sector drives. Both drives are functionally and physically equivalent.

Product Description
Seagate brings over 30 years of trusted performance and reliability to the new Seagate Desktop HDDs with an impressive 4TB storage capacity. Double your capacity and drive down costs with up to 1TB-per-disk hard drive technology plus SATA 6Gb/s interface optimizes burst performance. Seagate AcuTrac servo technology delivers dependable performance, even with hard drive track widths of only 75 nanometers and with Seagate OptiCache technology you'll notice an overall performance boost by as much as 45%. The included Seagate DiskWizard software allows you to install 3TB and 4TB hard drives in Windows, including XP, without UEFI BIOS. The best-fit applications for the Desktop HDD are: Desktop or all-in-one PCs, Home servers, PC based gaming systems, Desktop RAID, Direct-attached external storage devices (DAS), Network-attached storage devices (NAS).