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Hard Drives Featured Items

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WD Black 1TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD1003FZEX
WD Black 1TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD1003FZEX

Customer Choice Award Winner

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD1003FZEX
  • Item #: N82E16822236625
  • $99.99
  • | $75.56 (23 Offers)
  • Save: 24%
  • Free Shipping
WD Blue 2TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD20EZRZ
WD Blue 2TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD20EZRZ

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD20EZRZ
  • Item #: N82E16822235013
  • $99.99
  • | $52.99 (21 Offers)
  • Save: 47%
  • Free Shipping
WD Black 2TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD2003FZEX
WD Black 2TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD2003FZEX

Customer Choice Award Winner

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD2003FZEX
  • Item #: N82E16822236624
  • $159.99
  • | $109.99 (29 Offers)
  • Save: 31%
  • Free Shipping
Seagate FireCuda Gaming SSHD 1TB SATA 6.0Gb/s 2.5" Notebooks / Laptops Internal Hard Drive ST1000LX015
Seagate FireCuda Gaming SSHD 1TB SATA 6.0Gb/s 2.5" Notebooks / Laptops Internal Hard Drive ST1000LX015

Extra savings w/ promo code EMCTYVV36, limited offer

  • Height (maximum): 7mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.35mm
  • Option: BARE DRIVE ONLY! FACTORY-SEALED NON-RETAIL PACKING!
  • Model #: ST1000LX015
  • Item #: N82E16822179111
  • $62.99
  • | $59.99 (16 Offers)
  • Sale Ends in 9 Hours - Save: 5%
  • Free Shipping
WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EZRZ
WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EZRZ

Extra savings w/ promo code EMCTYVV23, limited offer

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD40EZRZ
  • Item #: N82E16822235011
  • $169.99
  • | $84.99 (28 Offers)
  • Sale Ends in 9 Hours - Save: 50%
  • Free Shipping
Seagate IronWolf 8TB NAS Hard Drive 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST8000VN0022
Seagate IronWolf 8TB NAS Hard Drive 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST8000VN0022

  • Average Latency: 6Gb/s
  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST8000VN0022
  • Item #: N82E16822179003
  • $251.99
  • | $229.99 (18 Offers)
  • Save: 9%
  • Free Shipping
Seagate IronWolf 4TB NAS Hard Drive 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST4000VN008
Seagate IronWolf 4TB NAS Hard Drive 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive ST4000VN008

  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST4000VN008
  • Item #: N82E16822179005
  • $125.99
  • | $109.99 (14 Offers)
  • Save: 13%
  • Free Shipping
WD Red WD100EFAX 10TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" NAS Hard Drive Bare Drive
WD Red WD100EFAX 10TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" NAS Hard Drive Bare Drive

Extra savings w/ promo code EMCTYVW28, limited offer

  • Height (maximum): 1.03"
  • Width (maximum): 4.00"
  • Length (maximum): 5.79"
  • Model #: WD100EFAX
  • Item #: N82E16822231546
  • $379.99
  • | $279.99 (32 Offers)
  • Sale Ends in 3 Days (Thu) - Save: 26%
  • Free Shipping
Toshiba P300 3TB Desktop PC Internal Hard Drive 7200 RPM SATA 6Gb/s 64MB Cache 3.5 inch - HDWD130XZSTA (RETAIL PACKAGE)
Toshiba P300 3TB Desktop PC Internal Hard Drive 7200 RPM SATA 6Gb/s 64MB Cache 3.5 inch - HDWD130XZSTA (RETAIL PACKAGE)

+ $10 off w/ promo code 42REM63, limited offer

  • Average Latency: 4.17ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: HDWD130XZSTA
  • Item #: N82E16822149633
  • | $89.99 (4 Offers)
  • Sale Ends in 7 Days (Mon)
  • Free Shipping
Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
Seagate BarraCuda ST6000DM003 6TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive

  • Height (maximum): 26.11mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST6000DM003
  • Item #: N82E16822183794
WD Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD30PURZ
WD Purple 3TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch WD30PURZ

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD30PURZ
  • Item #: N82E16822231534
Toshiba X300 5TB Performance & Gaming Internal Hard Drive 7200 RPM SATA 6Gb/s 128MB Cache 3.5 inch - HDWE150XZSTA (RETAIL PACKAGE)
Toshiba X300 5TB Performance & Gaming Internal Hard Drive 7200 RPM SATA 6Gb/s 128MB Cache 3.5 inch - HDWE150XZSTA (RETAIL PACKAGE)

  • Average Latency: 4.17ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: HDWE150XZSTA
  • Item #: N82E16822149628
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  • HDD Technology
  • HDD Specifications
  • Form Factors and Interfaces
  • Specialized Hard Drives
  • FAQ

Hard drive technology dates back to 1956 when IBM used them in huge mainframe computers. The first model had 50 platters, each 24-inches in diameter, stacked and enclosed in a metal box the size of industrial refrigerator. It cost $10,000 and stored 5 MB of data.

Today, desktop units store 10 TBs in a 3.5-inch casing, and cost roughly five cents per gigabyte.

A mechanical hard disk drive (HDD) is a remarkable feat of engineering. Magnetically-coated circular platters rotate at high speeds around a central hub; a magnetic head at the tip of an actuator arm reads and writes data on the platters by extrapolating binary code from changes in electrical current. The head skims just nanometers above the platters with extraordinary precision by gravitational physics, while simple mechanical implements keep the platters free of dust and debris.

In personal computing, the IBM XT in 1983 was the first to encase hard disk storage inside a computer case. Three years later, Apple added a SCSI port in the back of the Mac Plus for connecting an external hard drive for expandable storage. The technology retains this same general essence today.

Advances in predictive mathematics and miniaturization have driven advances in hard disk storage capacity. Fast-spinning motors have leveled up read and write speeds for faster performance—a standard hard drive for gaming spins at 7200 RPM and has a capacity of 1 or 2 terabytes.

Hard disk drive manufacturer consolidation through the years has left only three OEM hard drive companies in the market: Seagate, Western Digital, and Toshiba.

Are hard drives almost obsolete?

With inexpensive cloud storage backup services widely available, and consumer-grade solid-state drives dropping in price, some think the illustrious span of relevance for hard disk storage is coming to a close. Nonetheless, HDD storage solutions continue to deliver on performance and price value propositions.

Budget-conscious performance PC users have a small SSD for the operating system and main applications, running it in tandem with inexpensive hard disks used for file storage. Hybrid drives build in the same features with a small solid-state drive encased with a standard HDD.

For home media and business, HDD remain the go-to for shared storage and backup file servers. Disks specialized for Network Attached Storage (NAS) and video surveillance systems offer optimized performance for those systems.

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