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  • MX63851 4TB BarraCuda HDD, SATA III  w/ 64MB Cache
  • MX63851 4TB BarraCuda HDD, SATA III  w/ 64MB Cache
  • MX63851 4TB BarraCuda HDD, SATA III  w/ 64MB Cache

4TB BarraCuda HDD, SATA III w/ 64MB Cache

From 5 Customer Reviews

Product Info

BarraCuda – Versatile. Fast. Dependable. The Fiercest Hard Drive You've Ever Met.

Seagate brings over 20 years of trusted performance and reliability to the Seagate BarraCuda® 3.5 inch HDDs – now available in capacities up to 4TB.

  • Perfect for desktop storage, all-in-one storage, home servers, DAS devices
  • Multi-Tier™ Caching technology
  • Versatile storage
  • Advanced Power modes help save energy without sacrificing performance
  • Seagate Secure models provide Self-Encrypting Drive (SED) hardware-based data security and deliver an Instant Secure Erase feature for safe, fast and easy drive retirement. They meet NIST 800-88 media sanitization specification and also support the Trusted Computer Group (TCG) Opal standard



Versatile, Fast, and Dependable

BarraCuda® leads the industry with the highest capacities for desktops and mobile computers. With drives available up to 10TB, the BarraCuda® portfolio is a great option for upgrades at any price point. SATA 6Gb/s technology to further maximize performance.

Amazing Versatility

Get the most out of your storage with BarraCuda® hard drives. From computers full of photos and memories to gaming PCs that need more room to play, BarraCuda grows with you.

3.5-Inch BarraCuda® Hard Drives Deliver!

Rock-solid reliability built on over 20 years of BarraCuda® innovation. Versatile mix of capacity and price point options to fit any budget. Multi-Tier Caching Technology™ for excellent hard drive performance.

Multi-Tier Caching Technology

All hard drives in the BarraCuda family come equipped with Multi-Tier Caching Technology (MTC). MTC takes your PC to new performance levels, so you can load applications and files faster than ever before. By applying intelligent layers of NAND Flash, DRAM and media cache technologies, BarraCuda delivers improved read and write performance by optimizing data flow.

Trusted Dependability

The BarraCuda® family of reliable hard drives is here to stay, for years to come.

  • Experience - For more than 20 years, Seagate has manufactured and delivered the super-reliable BarraCuda® family of drives
  • BarraCuda® - Seagate's drive-reliability data simply speaks for itself, and the BarraCuda® family is often recognized by leading publications and customers


Product Seagate 4TB BarraCuda Desktop HDD
Model Number ST4000DM005
Interface SATA 6Gb/s with NCQ
Capacity 4 TB
Form Factor 3.5"
Cache 64 MB
SATA Transfer Rates Supported 6.0/3.0/1.5 Gb/s
Average Data Rate, Read/Write 146 MB/s
Max Sustained Data Rate, OD Read 180 MB/s
Seagate AcuTrac™ Technology Yes
Heads/Disks 6/3
Bytes per Sector 4096
Reliability/Data Integrity  
Contact Start/Stop Cycles N/A
Load/Unload Cycles 300,000
Nonrecoverable Read Errors per Bits Read, Max 1 per 10E14
Annual Failure Rate (AFR) < 1%
Power Management  
Startup Power 2.0 A
Power Consumption Operating Mode, Typical: 5.6 W
Idle Average: 4.0 W
Standby Mode: 0.50 W
Sleep Mode: 0.50 W
Voltage Tolerance, Including Noise (5V) ± 5%
Voltage Tolerance, Including Noise (12V) ± 10%
Temperature Operating (ambient min.): 0 °C
Operating (drive case max.): 60 °C
Non-operating (ambient): -40 to 70 °C
RoHS Compliance Yes
Dimensions (HxWxD) 1.028 x 4.0 x 5.787 inches
Weight 610g (1.345 lb)