Cheapest 8TB Hard Drives (2026)
Eight terabytes is the sweet spot for most storage buyers, large enough for a serious media library, NAS, or backup archive, but still affordable in a single drive. I track every 8TB HDD listing on Amazon.com and rank them by total price so you can find the absolute cheapest option right now.
Why 8 TB?
8 TB drives hit a good balance of total price and usable capacity. They are large enough that you will not outgrow one quickly, and cheap enough in absolute terms that buying several does not require a second thought. For NAS RAID setups, 8 TB drives keep rebuild times manageable while still delivering plenty of raw storage. Worth knowing that larger drives usually beat them on price per terabyte, so if the budget stretches, check 12 TB and up before committing.
Quick Verdict
- Who this is for
- NAS builders, Plex users, backup buyers, and anyone shopping specifically for an 8TB drive at the lowest price.
- What usually wins
- The cheapest new 8 TB internal HDD for NAS and desktop use. A portable 8 TB external if you need plug-and-play simplicity. Refurbished 8 TB enterprise pulls if you want the absolute lowest price.
- Prioritise
- Lowest total price for 8 TB. At this capacity, price per TB varies less between models. The main decision is new vs refurbished and internal vs external.
Prices updated daily from Amazon.com. All links go directly to the retailer. Details.
Bottom line: the lowest price-per-TB pick on this page right now is the HGST Ultrastar DC HC510 (He10) 10TB 7200 RPM SATA 6Gb/s 256MB Cache 3.5-Inch | Power Disable | Enterprise Hard Drive - HUH721010ALE600 (0F27452), 10 TB used, at $200.00 ($20.00/TB) on Amazon.com. Check the current price.
Cheapest New 8TB Internal HDDs
New 8 TB internal hard drives at the lowest prices. Full manufacturer warranty included.
Why this matters: Sorted by lowest total price. At 8 TB, the cheapest drive is usually the best deal.
WD-40 Ultrastar HE12 12TB SAS 512E
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HPE 8 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
791394-002 HPE 8TB 7.2K 12G LFF SAS Hard Drive
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Hpe 834031-B21 8TB 7.2K LFF SAS Hard Drive
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
AKPZKYYWN 10TB for Ultrastar 10T SAS 12G HUH721010AL5200 7200RPM 256MB 6Gb/s 3.5" Hard Disk
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Compatible ST8000NM0075 8TB 7.2K 12G 3.5" 256MB SAS Hard Drive
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
10TB SAS 3.5" Hard Drive for T410 T420 T430 T440 T605 T610 T620 T630 T640 T710
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
BUFFALO Replacement Spare Hard Drive 8TB NAS-Grade for TeraStation 2/4/8 Bay (OP-HD8.0N)
Cheapest 8TB External HDDs
Plug-and-play 8 TB external drives. USB-powered portables and desktop externals for easy backup and expansion.
BUSlink U3-8000S 8TB HDD USB 3.2 Gen 1 5Gbps/eSATA External Desktop Drive
Avolusion PRO-5X Series 8TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White) - 2 Year Warranty
Avolusion PRO-Z Series 8TB USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White)
Seagate FireCuda X Vault 8TB External HDD - RGB Lighting Certified for Xbox on PC (STNL8000400)
OSENTRiX BX100 10TB USB 3.2 Gen 2 USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop
OSENTRiX GX200 10TB USB 3.2 USB-C External Hard Drive for PC/Laptop (Windows or MacOS)
Avolusion D200 8TB USB 3.0 External Gaming Hard Drive + Controller Charging Station (2-in-1 for PS5 Console) - 2 Year Warranty
Avolusion PRO-5X Series 8TB USB 3.0 External Gaming Hard Drive for PS5 Game Console (White) - 2 Year Warranty
Cheapest Refurbished 8TB HDDs
Recertified enterprise 8 TB drives at steep discounts. Tested before resale with seller warranty included.
HKRVPXD EXOS 7E8 SAS HDD ST8000NM0075 8TB 7.2K 7200Rpm 256MB 12Gbps Enterprise Capacity 3.5 HDD Hard Drive for Server
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HPE 819201-B21 8TB 12G SAS 7.2K LFF 512E SC MDL Hard Disk Drive
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Dell 400-ATKR 8TB 7.2K SAS 3.5" 12Gb/s HDD KIT 14TH Generation Servers POWEREDGE R640 R740 R740XD R940 C6420 POWERVAULT MD1400 MD1420
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
8TB Hard Drive SAS 12Gbps 7.2K 512e 3.5i
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HGST HUH728080AL4200 3.5" 8TB SAS 12Gb/s 7.2K RPM 128M 0F23651 4Kn ISE Enterprise Hard Drive
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HGST Ultrastar DC HC510 (He10) 10TB 7200 RPM SATA 6Gb/s 256MB Cache 3.5-Inch | Power Disable | Enterprise Hard Drive - HUH721010ALE600 (0F27452)
HPE 8 TB Hard Drive - 3.5" Internal - SAS (12Gb/s SAS)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Dell M40TH 8TB 7.2K 12G LFF SAS 512E Hard Drive (Renewed)
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
8TB NAS-Rated Drives
NAS-optimised 8 TB drives from Seagate IronWolf and WD Red lines. Built for 24/7 multi-bay use with vibration resistance.
Western Digital 8TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD8005FFBX
Western Digital WD Red Plus Internal Hard Drive 8TB CMR 3.5 inch SATA 5640 RPM 256MB NAS WD80EFPX-AJP Eco Package
Seagate IronWolf 8Tb NAS Internal Hard Drive HDD – 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage (ST8000VN0022),Silver
Seagate IronWolf 8TB Internal Hard Drive for NAS ST8000VN002
Seagate IronWolf Pro, 8 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST8000NT001)
Seagate IronWolf 10TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, with Rescue Service (ST10000VN0008)
Seagate IronWolf 10TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache RAID Network Attached Storage Home Servers - (ST10000VN0008)
Western Digital 8TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD80EFAX
How to Choose
Buying an 8 TB drive is straightforward. Here is what to weigh.
Internal vs external
Internal 3.5" drives are cheaper per TB and fit NAS enclosures and desktop PCs. External drives cost a bit more but are plug-and-play via USB, no enclosure or cable needed.
New vs refurbished
New 8 TB drives come with a 2–5 year manufacturer warranty. Refurbished enterprise 8 TB pulls cost meaningfully less with a shorter seller warranty instead. Both work fine for bulk storage, and the price gap between them is the thing to check on the day you buy.
NAS-rated vs desktop
NAS-rated drives (IronWolf, WD Red) are built for 24/7 operation and vibration resistance in multi-bay enclosures. For a single-drive desktop or backup use, a standard desktop drive is fine and usually cheaper.
CMR vs SMR
Most 8 TB drives are CMR, but check the spec. SMR drives work for sequential workloads (backup, archive) but struggle with random writes and RAID rebuilds.
Frequently Asked Questions
How much should an 8 TB hard drive cost?
There is no fixed number worth quoting — 8 TB pricing moves with stock and deals, so the table on this page ranks every live Amazon US 8 TB listing by total price and $/TB and refreshes daily. Use it on the day you buy rather than a figure you saw last month. As a sanity check, compare the 8 TB price per terabyte against larger drives on our cheapest-per-TB page; in the 2026 shortage the cheapest tier has not always been the biggest drive.
Is 8 TB the right size for me?
8 TB is a popular sweet spot — big enough for a serious media library, NAS, or backup archive, but still affordable as a single drive, and it keeps NAS RAID rebuild times manageable. That said, larger drives often beat it on price per terabyte, so if your budget stretches, check 12 TB and up before committing.
Should I buy new or refurbished at 8 TB?
New 8 TB drives come with a 2–5 year manufacturer warranty; refurbished enterprise 8 TB pulls cost less with a shorter seller warranty instead. Both work fine for bulk storage. The gap between them shifts, so check the new and used rows on the day you buy — refurbished is not always as far below new as people assume.
Internal or external 8 TB — which is cheaper?
Internal 3.5-inch drives are cheaper per terabyte and drop straight into a NAS or desktop. External 8 TB drives cost a bit more but are plug-and-play over USB with no enclosure needed. If you want the lowest price and can open your PC (or have a NAS bay free), go internal; if you want zero setup, go external.
Are 8 TB drives CMR or SMR?
Most 8 TB drives are CMR, but check the spec sheet before buying. SMR (shingled) drives are fine for sequential workloads like backup and archive, but they struggle with random writes and RAID rebuilds. For NAS or multi-use storage, confirm CMR.
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