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Updated: 08 Oct 2025

10 Best Internal Hard Drives

#1
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Seagate IronWolf 12TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST12000VNZ008/ST12000VN0008)

Brand: Seagate
$426.39
⭐ 4.6
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    IronWolf internal hard drives are the ideal solution for up to 8-bay, multi-user NAS environments craving powerhouse performance
  • Store more and work faster with a NAS-optimized hard drive providing ultra-high capacity 12TB and cache of up to 256MB
  • Purpose built for NAS enclosures, IronWolf delivers less wear and tear, little to no noise/vibration, no lags or down time, increased file-sharing performance, and much more
  • Easily monitor the health of drives using the integrated IronWolf Health Management system and enjoy long-term reliability with 1M hours MTBF
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#2
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Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFPX

Brand: Western Digital
$270.50
⭐ 4.7
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    Available in capacities ranging from 1-14TB with support for up to 8 bays
  • As used for storage capacity, 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.Specific uses: Business
  • Supports up to 180 TB/yr workload rate
  • Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.
  • NASware firmware for compatibility
  • Small or medium business NAS systems in a 24x7 environment
  • 3-year limited warranty
  • See official Western Digital website for regional specific warranty details.
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#3
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SEAGATE 4TB Barracuda 3.5 5400 SATA Hard Disk Drive ST4000DM004

Brand: Seagate
$173.00
⭐ 4.1
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    Cost-effective storage upgrade for laptop or desktop computers
  • Store all your games, music, movies and more with up to 4TB of storage
  • SATA 6Gb/s interface optimizes burst performance;
  • Desktop Storage
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#4
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Toshiba 16TB Enterprise Internal Hard Drive – MG Series 3.5' SATA HDD Mainstream Server and Storage, 24/7 Reliable Operation, Hyperscale and Cloud Storage (MG08ACA16TE)

Brand: TOSHIBA
$443.06
⭐ 4.7
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    DESIGNED FOR BUSINESS The Toshiba 3.5 inch SATA hard drive offers scalable support for enterprise storage array, industrial server and storage systems with a need for capacity and advanced technologies to meet professionals demands
  • ENTERPRISE-CLASS PERFORMANCE With its reliable 24/7 operation, unwavering performance and 5 year warranty, this hard drive for enterprise server and storage systems ensures seamless performance with up to 550 TB per year workload
  • INTEGRATED RV SENSORS Designed to eliminate knock-on vibration, this 7200-rpm shock-detecting hard drive features built-in RV sensors to minimize rotational vibration in multi-bay, cloud-scale infrastructures for a smoother experience
  • FULL DATA PROTECTION Installed with Persistent Write Cache technology, this robust 3.5 hard drive securely stores your data assuring full coverage in the event of an emergency, granting you the ultimate piece of mind
  • TAILOR YOUR STORAGE With of capacities as high as 18 TB and interface options including SATA and SAS you can take control of your internal data storage and customize your enterprise server experience down to the last detail
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#5
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Western Digital Hard Drive, 10 TB, SATA3, 256 MB, 24/7, Red/Silver/Black

Brand: Western Digital
$338.00
⭐ 4.1
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    Available in capacities ranging from 1-14TB with support for up to 8 bays
  • Small or medium business NAS systems in a 24x7 environment
  • NASware firmware for compatibility
  • Model Number: WD101EFBX
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#6
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Seagate IronWolf 8TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST8000VNZ04/N004)

Brand: Seagate
$277.27
⭐ 4.6
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    IronWolf internal hard drives are the ideal solution for up to 8-bay, multi-user NAS environments craving powerhouse performance
  • Store more and work faster with a NAS-optimized hard drive providing 8TB and cache of up to 256MB
  • Purpose built for NAS enclosures, IronWolf delivers less wear and tear, little to no noise/vibration, no lags or down time, increased file-sharing performance, and much more
  • Easily monitor the health of drives using the integrated IronWolf Health Management system and enjoy long-term reliability with 1M hours MTBF
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#7
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Western Digital WD Blue Internal Hard Drive 4TB CMR 3.5 inch SATA 5400 RPM 256 MB PC WD40EZAX-AJP Eco Package

Brand: Western Digital
$130.89
⭐ 4.4
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    No features listed
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#8
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Western Digital WD Blue Internal Hard Drive 6TB CMR 3.5-inch SATA 5400 RPM 256MB Cache 256 MB PC

Brand: Western Digital
$167.70
⭐ 4.2
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    No features listed
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#9
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Seagate Barracuda 8TB Internal Hard Drive HDD – 3.5 Inch Sata 6 Gb/s 5400 RPM 256MB Cache for Computer Desktop PC – Frustration Free Packaging (ST8000DM004)

Brand: Seagate
$197.23
⭐ 4.1
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    No features listed
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#10
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Western Digital WD 16TB HDD Ultrastar DC HC550 SATA 7200RPM 3.5" Enterprise Hard Drive - WUH721816ALE6L4 (Renewed)

Brand: Western Digital
$349.00
⭐ 4.1
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    16TB capacity in a standard 3.5" form factor
  • Energy-assisted magnetic recording (EAMR) technology improves typing
  • Triple Stage Actuator (TSA) improves head positioning accuracy
  • HelioSeal technology is the foundation of high-capacity hard drives Western Digital
  • 512MB cache buffer improves response time and data management
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