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Seagate Guardian Series Internal Hard Drives

New from Seagate - the Guardian Series of 10TB hard drives with 3 different models. The BarraCuda Pro for standard desktop usage, the IronWolf for use in a NAS, and the SkyHawk for security and surveillance.

Find out more about the Seagate Guardian Series:

Hard Drives Featured Items

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WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX
WD Red 4TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40EFRX

Extra savings w/ promo code EMCRBCR23, ends 1/26

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD40EFRX
  • Item #: N82E16822236599
  • $219.99
  • | $145.99 (24 Offers)
  • Sale Ends in 5 Days (Thu) - Save: 34%
  • Free Shipping
WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40PURX
WD Purple 4TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD40PURX

Extra savings w/ promo code EMCRBBK24, ends 1/22

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD40PURX
  • Item #: N82E16822236659
  • $199.99
  • | $139.99 (21 Offers)
  • Sale Ends in 4 Hours - Save: 30%
  • Free Shipping
Seagate Expansion 8TB USB 3.0 3.5" Desktop External Hard Drive STEB8000100 Black
Seagate Expansion 8TB USB 3.0 3.5" Desktop External Hard Drive Black

Extra savings w/ promo code EMCRBBH35, ends 1/23

  • Dimensions: 1.44" x 4.75" x 6.93"
  • Weight: 2.09 lbs.
  • Package Contents: Seagate Expansion drive 4-foot (120cm) USB 3.0 cable Power adapter Quick start guide
  • Model #: STEB8000100
  • Item #: N82E16822178951
  • $239.99
  • | $219.99 (7 Offers)
  • Sale Ends in 2 Days (Mon) - Save: 8%
  • Free Shipping
TOSHIBA 1TB Canvio Basics Portable Hard Drive USB 3.0 Model HDTB310XK3AA Black
TOSHIBA 1TB Canvio Basics Portable Hard Drive USB 3.0 Model HDTB310XK3AA Black

Extra savings w/ promo code EMCRBCR48, ends 1/26

  • RPM: 5400 RPM
  • Cache: 8MB
  • Average Seek Time: 12ms
  • Dimensions: 0.59" x 3.10" x 4.70"
  • Model #: HDTB310XK3AA
  • Item #: N82E16822149571
  • $69.99
  • | $54.99 (12 Offers)
  • Sale Ends in 5 Days (Thu) - Save: 21%
  • Free Shipping
WD Red 6TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD60EFRX
WD Red 6TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD60EFRX

Extra savings w/ promo code EMCRBCR25, ends 1/23

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Electrical Outlet Plug Type: Plug Type “A” (USA, Canada, Mexico, Japan)
  • Model #: WD60EFRX
  • Item #: N82E16822236737
  • $299.99
  • | $234.99 (22 Offers)
  • Sale Ends in 2 Days (Mon) - Save: 22%
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WD Black 1TB Mobile Hard Disk Drive - 7200 RPM SATA 6Gb/s 32MB Cache 2.5 Inch - WD10JPLX
WD Black 1TB Mobile Hard Disk Drive - 7200 RPM SATA 6Gb/s 32MB Cache 2.5 Inch - WD10JPLX

Extra savings w/ promo code EMCRBBK23, ends 1/25

  • Height (maximum): 9.5mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.20mm
  • Parts: 3 years
  • Model #: WD10JPLX
  • Item #: N82E16822235089
  • $159.99
  • | $71.99 (13 Offers)
  • Sale Ends in 4 Days (Wed) - Save: 55%
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TOSHIBA P300 HDWD110XZSTA 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive Retail Packaging
TOSHIBA P300 HDWD110XZSTA 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive Retail Packaging

Extra savings w/ promo code EMCRBBH33, ends 1/23

  • Average Latency: 4.17ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: HDWD110XZSTA
  • Item #: N82E16822149631
  • $54.99
  • | $49.99 
  • Sale Ends in 2 Days (Mon) - Save: 9%
  • Free Shipping
Seagate Expansion 4TB USB 3.0 3.5" Desktop External Hard Drive STEB4000100 Black
Seagate Expansion 4TB USB 3.0 3.5" Desktop External Hard Drive Black

Extra savings w/ promo code EMCRBCR32, ends 1/26

  • Dimensions: 1.44" x 4.75" x 6.93"
  • Weight: 2.09 lbs.
  • Package Contents: Seagate Expansion drive 4-foot (120cm) USB 3.0 cable Power adapter Quick start guide
  • Electrical Outlet Plug Type: others
  • Model #: STEB4000100
  • Item #: N82E16822178741
  • $129.99
  • | $109.99 (6 Offers)
  • Sale Ends in 5 Days (Thu) - Save: 15%
  • Free Shipping
WD Blue 3TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EZRZ
WD Blue 3TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EZRZ

Extra savings w/ promo code EMCRBBH34, ends 1/23

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD30EZRZ
  • Item #: N82E16822235012
  • $119.99
  • | $88.99 (22 Offers)
  • Sale Ends in 2 Days (Mon) - Save: 26%
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Seagate ST1000LM035 1TB 128MB Cache SATA 6.0Gb/s 2.5" Internal Notebook Hard Drive
Seagate ST1000LM035 1TB 128MB Cache SATA 6.0Gb/s 2.5" Internal Notebook Hard Drive

New version available, refer to 2.5” BarraCuda 1T

  • Average Seek Time: 13ms
  • Height (maximum): 7mm
  • Width (maximum): 69.85mm
  • Length (maximum): 100.35mm
  • Model #: ST1000LM035
  • Item #: N82E16822178875
  • $99.99
  • | $56.99 (6 Offers)
  • Save: 43%
  • Free Shipping
WD Red 3TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EFRX
WD Red 3TB NAS Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 64MB Cache 3.5 Inch - WD30EFRX

Extra savings w/ promo code EMCRBCB22, ends 1/22

  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD30EFRX
  • Item #: N82E16822236344
  • $149.99
  • | $109.99 (24 Offers)
  • Sale Ends in 4 Hours - Save: 27%
  • Free Shipping
TOSHIBA 3TB Canvio Basics Portable Hard Drive USB 3.0 Model HDTB330XK3CA Black
TOSHIBA 3TB Canvio Basics Portable Hard Drive USB 3.0 Model HDTB330XK3CA Black

Extra savings w/ promo code EMCRBBK35, ends 1/25

  • RPM: 5400 RPM
  • Cache: 8MB
  • Average Seek Time: 12ms
  • Dimensions: 0.81" x 3.10" x 4.70"
  • Model #: HDTB330XK3CA
  • Item #: 1Z4-000B-000A8
  • $139.99
  • | $99.99 (9 Offers)
  • Sale Ends in 4 Days (Wed) - Save: 29%
  • Free Shipping
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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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