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IBM 36 GB 3.5' Internal Hard Drive
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  • $100.20 
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ST3300657SS Seagate 300GB SAS 3.5" LFF 6G 15K Hard Drive 45E7953
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  • $46.40 
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IBM 250 GB 2.5" Internal Hard Drive
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  • $266.59 
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Seagate 18TB 7200 RPM 256MB SAS 3.5 4096/512E (ST18000NM004J)
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  • $705.00 
  • $45.00 Shipping
Dell 600 GB 3.5" Hard Drive - Internal - 1 Pack
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  • $150.00 
  • $45.00 Shipping
Axiom 0A89471-AX 1TB 7200 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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  • $335.66 
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Lenovo ThinkServer 0C19501 500GB 7200 RPM SATA 6.0Gb/s 3.5" Enterprise Hard Drive
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  • $65.13 
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Lenovo 00FC425 500 GB Thin 2.5-inch SATA 7 mm Internal Hard Drive - 7.2K RPM
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  • $46.40 
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Seagate Exos X16 16TB SAS 12Gb/s 3.5" Enterprise HDD (ST16000NM002G)
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  • $550.00 
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Lenovo 1TB 3.5" SATA 7200rpm Internal Hard Drive 4XB0G88760
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  • $131.93 
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Lenovo ThinkPad 00MJ131 900GB 10000 RPM SAS 6Gb/s 3.5" Hard Drive
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  • $260.69 
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IBM 42D0627 300GB 10000 RPM SAS 6Gb/s 2.5" SFF NHS Internal Hard Drive
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  • $337.00 
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Lenovo 1TB 3.5" SATA 7200rpm Internal Hard Disk Drive 4XB7A13554
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  • $520.98 
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Lenovo 00MJ125 2 TB Hard Drive - 3.5" Internal - Near Line SAS (NL-SAS) (6Gb/s SAS)
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  • $248.90 
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Lenovo ThinkPad 00MJ127 3TB 7200 RPM SAS 6Gb/s 3.5" NL Internal Hard Drive
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  • $306.36 
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Lenovo 10 TB Hard Drive - Near Line SAS (NL-SAS) (12Gb/s SAS) - 3.5" Drive - Internal
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  • $833.33 
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Lenovo 14 TB Hard Drive - SATA (SATA/600) - 3.5" Drive - Internal
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  • $916.83 
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Lenovo 14 TB Hard Drive - Near Line SAS (NL-SAS) (12Gb/s SAS) - 3.5" Drive - Internal
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  • $833.33 
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NetApp X477A-R6 4TB 7.2K SAS 3.5'' Hard Drive DS4243 DS4246 FAS2240 0B26922
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  • $115.00 
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Western Digital 10TB WD Gold Enterprise Class Internal Hard Drive WD102KRYZ
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  • $350.00 
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  • $295.00 - $350.00
Lenovo 10 TB Hard Drive 3.5" Internal Near Line SAS NL-SAS 12Gb/s SAS 4XB7A14126
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  • $979.60 
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Lenovo 12 TB 3.5" Internal Hard Drive - Near Line SAS (NL-SAS)
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  • $1,296.90 
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Lenovo 12 TB 3.5" Internal Hard Drive - Near Line SAS (NL-SAS) - 7200rpm - Hot Swappable
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  • $1,030.71 
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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:

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
Anonymous
2/15/2026 7:08:13 AM
Red Pros are Reliable

“ For NAS units/Unraid/TrueNAS you simply cannot buy a better drive as these are the best compromise/bang-for-buck when considering all features (heat/noise/reliability/speed/etc). ”

Western Digital Red Pro WD260KFGX 26TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" HD OEM
Roger C.
2/13/2026 7:23:11 AM
Works as described

“ 8tb hard drive that works ”

WD Gold WD8005FRYZ 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
James s.
2/4/2026 11:01:00 AM
Great Value - added as spare to my Synology DS1813+

“ So I just made this a spare drive on my NAS. ”

Seagate IronWolf Pro ST24000NT002 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
Blair K.
2/4/2026 9:36:09 AM
great drive

“ I recommend this drive ”

Seagate BarraCuda ST4000DM004 4TB 5400 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives Bare Drive - OEM
Brian K.
2/3/2026 6:41:12 PM
Amazing density!

“ Highly recommend this 28Tb drive for DAS or NAS ”

Seagate IronWolf Pro ST28000NT000 28TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
Anonymous
1/30/2026 9:00:27 AM
Plug and Play

“ Using this drive with an Orico hard drive enclosure for a Raid setup. ”

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX
Anonymous
1/27/2026 11:15:38 AM
Great Product and Service

“ I ordered a WD hard drive to kick up my pc storage for my photography RAW files. ”

WD Blue 6TB Desktop Hard Disk Drive - 5400 RPM SATA 6Gb/s 256MB Cache 3.5 Inch - WD60EZAX