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Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0453
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Seagate
Seagate 1TB Enterprise Capacity 2.5 Internal Hard Disk Drive SAS 12Gb/s 7200 RPM 128MB Cache Model ST1000NX0453
  • Height (maximum): 15mm
  • Width (maximum): 70.10mm
  • Length (maximum): 100.46mm
  • Option: Standard
  • Model #: ST1000NX0453
Hitachi GST Ultrastar A7K1000 HUA721010KLA330 (0A35772) 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
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Hitachi GST Ultrastar A7K1000 HUA721010KLA330 (0A35772) 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive Bare Drive
  • Average Seek Time: 8.2ms
  • Average Latency: 4.17ms
  • Parts: 3 years limited
  • Labor: 3 years limited
  • Model #: HUA721010KLA330
  •  
  • $105.00 
  • $50.00 Shipping
Seagate BarraCuda ST3000DM007 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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Seagate BarraCuda ST3000DM007 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 20.20mm
  • Width (maximum): 101.85mm
  • Length (maximum): 146.99mm
  • Model #: ST3000DM007
  •  
  • $248.70 
  • Free Shipping
WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 32MB Cache 3.5 Inch - WD5000AZLX
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WD Blue 500GB Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 32MB Cache 3.5 Inch - WD5000AZLX
  • NAND Flash Memory Type: Desktop
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD5000AZLX
Western Digital Ultrastar 14TB DC HC500 7200 RPM SATA 6.0Gb/s 3.5" Data Center Internal Hard Disk Drive - 0F31284
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Western Digital Ultrastar 14TB DC HC500 7200 RPM SATA 6.0Gb/s 3.5" Data Center Internal Hard Disk Drive - 0F31284
  • Average Latency: 6Gb/s
  • NAND Flash Memory Type: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Model #: 0F31284
Seagate SkyHawk AI ST12000VE001 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
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Seagate SkyHawk AI ST12000VE001 12TB 7200 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 #: ST12000VE001
WD Gold 14TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - WD141KRYZ
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WD Gold 14TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 512MB Cache 3.5 Inch - WD141KRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD141KRYZ
WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch WD63PURZ
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WD Purple 6TB Surveillance Hard Disk Drive - 5400 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch WD63PURZ
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD63PURZ
Seagate Skyhawk 6TB Video Internal HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for  (ST6000VX009)
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Seagate
Seagate Skyhawk 6TB Video Internal HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for (ST6000VX009)
  • NAND Flash Memory Type: Hard Drives
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Model #: ST6000VX009
Western Digital 20TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD202KRYZ
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Western Digital 20TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD202KRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD202KRYZ
WD Purple 14TB 3.5" SATA 7200rpm Internal Hard Drive WD140PURZ
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WD Purple 14TB 3.5" SATA 7200rpm Internal Hard Drive WD140PURZ
  • Average Latency: 6Gb/s
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD140PURZ
  •  
  • $1,235.68 
  • Free Shipping
Seagate IronWolf ST2000VN003 internal hard drive 3.5" 2000 GB / 2TB Serial ATA III
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WD Blue WD80EAZZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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WD Blue WD80EAZZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD80EAZZ
Lenovo 7XB7A00043 4TB 3.5" SAS 7200rpm Internal Hard Drive - Hot Swappable
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WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive
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WD Purple WD42PURZ 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Surveillance Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD42PURZ
Seagate Exos 7E10 6TB 3.5" SATA 7200rpm Internal Hard Drive ST6000NM019B
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Seagate
Seagate Exos 7E10 6TB 3.5" SATA 7200rpm Internal Hard Drive ST6000NM019B
  • NAND Flash Memory Type: SLC
  • Parts: 5 Year
  • Model #: ST6000NM019B
4TB HDD Exos7E10 HDD 512N SATA
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Seagate
4TB HDD Exos7E10 HDD 512N SATA
  • Model #: ST4000NM000BSP
WD Gold 12TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch - WD121KRYZ
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WD Gold 12TB Enterprise Class Hard Disk Drive - 7200 RPM Class SATA 6Gb/s 256MB Cache 3.5 Inch - WD121KRYZ
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD121KRYZ
Seagate ST2000VX015 3.5 in. 256 MB & 2TB Skyhawk Surveillance Internal Hard Drive HDD
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Seagate
Seagate ST2000VX015 3.5 in. 256 MB & 2TB Skyhawk Surveillance Internal Hard Drive HDD
  • NAND Flash Memory Type: SLC
  • Features: ImagePerfect firmware is designed to ensure seamless video footage capture in 24x7 surveillance workloads1 that record video from 64 HD cameras. SkyHawk Health Management actively helps protect your surveillance storage by focusing on prevention, intervention, and recovery options. Included is RAID RapidRebuild, which provides 3x faster volume rebuilds over traditional RAID
  • Usage: For Video Surveillance
  • Model #: ST2000VX015
SEAGATE ST2000NM000A 2TB 7200RPM 256MB 512N SATA 3.5
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SEAGATE ST2000NM000A 2TB 7200RPM 256MB 512N SATA 3.5
  • NAND Flash Memory Type: SLC
  • Model #: ST2000NM000A
  •  
  • $765.27 
  • Free Shipping
WD 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" (WD44PURZ)
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Western Digital
WD 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 128 MB Cache, 3.5" (WD44PURZ)
  • Brand: Western Digital
  • Series: PureDrive
  • Capacity: 4TB
  • RPM: 7200 RPM
  • Model #: WD44PURZ
HPE 1.20 TB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS) - Server Device Supported - 10000rpm
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4TB Seagate Enterprise 3.5 Inch SATA III 6Gb/s 7200RPM 256MB Cache Internal Hard Drive
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WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD40EZAZ
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WD Blue 4TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD40EZAZ
  • Recording Technology: SMR
  • Features: Tested For Compatibility We perform tests on hundreds of systems and a multitude of platforms in our F.I.T. Lab to give our customers confidence that our drives will work in their systems. Low Power Consumption State-of-the-art seeking algorithms and advanced power management features help ensure low power consumption. NoTouch Ramp Load Technology Safely positions the
  • Usage: For Daily Computing
  • Height (maximum): 26.10mm
  • Model #: WD40EZAZ
Seagate Enterprise Capacity 3.5 HDD 6TB 7200 RPM 512e SATA 6Gb/s 128MB-Cache 3.5-Inch Hard Disk Drive (ST6000NM0024)
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Seagate Enterprise Capacity 3.5 HDD 6TB 7200 RPM 512e SATA 6Gb/s 128MB-Cache 3.5-Inch Hard Disk Drive (ST6000NM0024)
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Length (maximum): 147.00mm
  • Model #: ST6000NM0024
2.5" 1.2TB 10K SAS 12Gb HDD
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Lenovo
2.5" 1.2TB 10K SAS 12Gb HDD
  • NAND Flash Memory Type: SLC
  • Model #: 7XB7A00027
HP 2 TB 3.5" Internal Hard Drive
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HP 2 TB 3.5" Internal Hard Drive
  • NAND Flash Memory Type: Hard Drive
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 861681-B21
Seagate ST1000VX013 1TB Skyhawk 5400 Hard Drive
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Seagate
Seagate ST1000VX013 1TB Skyhawk 5400 Hard Drive
  • Part Number: ST1000VX013
  • Model #: ST1000VX013
WD Black 1TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD1003FZEX
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WD Black 1TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD1003FZEX
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD1003FZEX
Seagate Exos X18 ST10000NM018G 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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Seagate
Seagate Exos X18 ST10000NM018G 10TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST10000NM018G
HPE ISS 872475-B21 300GB SAS 10K SFF SC DS HDD
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HPE ISS 872475-B21 300GB SAS 10K SFF SC DS HDD
  • NAND Flash Memory Type: Others
  • Average Latency: 6Gb/s
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 872475-B21
HPE ISS 870759-B21 900GB SAS 15K SFF SC DS HDD
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HPE ISS 870759-B21 900GB SAS 15K SFF SC DS HDD
  • NAND Flash Memory Type: Hard Drive
  • Parts: 3 Year
  • Model #: 870759-B21
WD Red Plus WD30EFPX 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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WD Red Plus WD30EFPX 3TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Flash Memory Capacity: Hard Drive
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: WD30EFPX

Internal Hard Drives

Need more storage for your games, images, music and movies? An internal hard drive upgrade or a second drive may be what you are looking for. Internal hard drives are used as main storage in desktop PCs, workstations, and servers. Nowadays, small form factor internal hard drives are used in consumer electronic products like mp3 players and digital cameras as well. Regardless of your application, Newegg.com presents an extensive selection of internal hard drive products for you to choose from, from hard drive manufacturers like Western Digital, Seagate, HItachi, LaCie, Maxtor and others.

Understanding Internal Hard Drive Specifications

When selecting a hard drive, there are two main things to consider: speed and capacity. Budget permitting, always go for the fastest drive you can. Speed is measured using the RPM figure a faster rotational speed means greater performance, especially in games, but may cause greater heat and noise. The capacity, measured in GB (gigabytes), should depend on your own storage requirements. A higher capacity drive will invariably cost more than a lower capacity drive, so a balance must usually be struck between capacity and cost. In addition, the hard drive interface IDE, SATA, or SCSI determine a drives application: IDE and SATA for personal storage and SCSI for enterprise, mission critical storage.

Bestselling Desktop Internal Hard Drives Reviews:

Anonymous
4/24/2026 9:44:50 AM
Synology 4tb disk

“ Installation was simple and the drive has performed well. ”

Synology 4TB HAT3300 Plus Series SATA III 3.5" Internal NAS HDD (HAT3310-4T)
Anonymous
4/22/2026 11:30:39 AM
Delivered very quick and drive is as described.

“ This is the second drive I purchased this week from Newegg. ”

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX
Eric W.
4/17/2026 9:54:02 AM
Never had an issue with Iron Wolf

“ I've been using Iron Wolf drives (Pro and not pro) over the years, and have zero reason to try anything else. ”

Seagate IronWolf 8TB NAS Hard Drive 7200 RPM 256MB Cache SATA 6.0Gb/s CMR 3.5" Internal HDD for RAID Network Attached Storage ST8000VN004-NE
Alex A.
4/15/2026 8:31:38 AM
Just works!

“ I bought this for use in an external 4-bay USB drive enclosure to add to 3 older Seagate Compute 8TB drives for a total formatted capacity of 43.6TB. ”

Seagate BarraCuda ST24000DM001 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
Keith V.
4/9/2026 4:20:16 PM
High Capacity Plug and Play Drive

“ I bought this during the holiday deal so assumed there was a chance I got a questionable drive, but this is holding up just fine. ”

Seagate BarraCuda ST24000DM001 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
destruk
4/2/2026 2:08:29 PM
Good if you get one that works?

“ Overall, Im very pleased with this drive and would definitely recommend it. ”

Seagate BarraCuda ST24000DM001 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
Kurt M.
3/2/2026 10:26:59 AM
Great as Usual

“ Hard drive for over 2 weeks no issues ”

Seagate IronWolf ST4000VN006 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
Robert W.
2/20/2026 9:57:19 AM
No issues so far. Happy with drive performance

“ I purchased this on sale to use as an external drive for data storage and backups, though not in a raid or nas environment. ”

WD Red Plus 12TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD120EFGX