Cheapest Hard Drives per Terabyte (2026)
If your only goal is the lowest possible cost per terabyte, this page is for you. We track every HDD listing on Amazon US and UK and rank them by price per TB — nothing else. Whether you are filling a JBOD, building a cold-storage archive, or just want the most gigabytes for your budget, these are the drives that deliver the most storage for the least money right now.
How cheap can you go?
As of 2026, the cheapest new HDDs hover around $10–13 per TB at high capacities (14–20 TB). Refurbished enterprise pulls can dip below $8/TB. The sweet spot for most buyers is 8–16 TB new drives — large enough for a low per-TB cost, small enough to stay affordable in total price.
Quick Verdict
- Who this is for
- Budget-conscious buyers, homelab builders, data hoarders, and anyone who needs maximum raw storage at the absolute lowest price per terabyte.
- What usually wins
- The cheapest new drive at 12 TB or above for the best per-TB price. Refurbished enterprise drives if you can tolerate shorter warranties and want sub-$10/TB pricing.
- Prioritise
- Price per TB — the single metric this page optimises for. Everything else (brand, speed, warranty length) is secondary when raw cost-per-gigabyte is the goal.
Prices updated hourly from Amazon US and UK. All links go directly to the retailer. Details.
Cheapest New HDDs per Terabyte
Brand-new hard drives with the lowest cost per TB available right now. Full manufacturer warranty included.
4TB Portable External USB Hard Drive, USB 3.0 Slim Storage Device, High-Speed Data Backup & Memory Expansion for PC & Laptop Computers(Blue)
Riyth external hard drive-external-8.10-31
Seagate IronWolf ST4000VN008 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 5900 rpm, CMR, 64 MB Cache, SATA 6 GB/s, Silver, 3 Years Data Rescue Service
ADATA HD330 1TB USB3.1 External Hard Disk, black HD330
ModusTech External (DESKTOP) Hard Drive 3TB USB 3.0 & Type-C 3.0 - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (16.0, TB)
ModusTech External (DESKTOP) Hard Drive USB 3.1 Type-C - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (14.0, TB)
Seagate Exos 7E8 HDD 512E/4KN SAS
ModusTech 12TB External (DESKTOP) Hard Drive USB 3.1 Type-C - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (TB)
WD Purple SATA - Festplatte - Serial ATA (WD34PURZ)
Seagate Expansion Desktop External 16TB
Cheapest High-Capacity Drives (12 TB+)
The price-per-TB sweet spot. Large-capacity drives where the per-terabyte cost is at its lowest.
Seagate IronWolf ST4000VN008 4TB Internal Hard Drive, NAS HDD, 3.5 Inch, 5900 rpm, CMR, 64 MB Cache, SATA 6 GB/s, Silver, 3 Years Data Rescue Service
ModusTech External (DESKTOP) Hard Drive 3TB USB 3.0 & Type-C 3.0 - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (16.0, TB)
ModusTech External (DESKTOP) Hard Drive USB 3.1 Type-C - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (14.0, TB)
ModusTech 12TB External (DESKTOP) Hard Drive USB 3.1 Type-C - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (TB)
Seagate Expansion Desktop External 16TB
MDD MAXDIGITALDATA MDD 18TB 7200RPM 256MB Cache SAS 12.0Gb/s 3.5inch Internal Enterprise Hard Drive (MDD18TSAS25672E) - [Not a SATA HDD]
WD 18TB Elements Desktop External Hard Drive - USB 3.0, Black
Avolusion PRO-G1 Series 14TB USB 3.2 Gen 2 (10Gbps) USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop (Silver)
Western Digital WD WUH721818AL5204 18TB SAS 12Gb/s 7.2K RPM 512M 0F38353 512e/4Kn SE HDD
MDD (MD14TSATA25672NAS) 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Internal NAS Hard Drive
Cheapest Refurbished HDDs per Terabyte
Recertified enterprise pulls and used drives at rock-bottom per-TB pricing. Best for bulk storage where brand-new warranty is not essential.
Seagate ST4000NM0125 4TB SAS 6Gb s ES 7200RPM 128MB 3.5 512e Bare
Seagate Enterprise Capacity 3.5 HDD (Constellation ES) 4TB 7200RPM 6Gbps SAS 128 MB Cache Internal Bare Drive ST4000NM0023 (Renewed)
Hitachi HUS724030ALS640 3TB 7.2k SAS 3.5" Hard Drive (Renewed)
Seagate 6TB 3.5 Desktop Hard Drive Model ST6000NM0105
ModusTech External (DESKTOP) Hard Drive 3TB USB 3.0 & Type-C 3.0 - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (16.0, TB)
HEWLETT PACKARD 793762-001 HPE 6TB 6G 7.2K LFF SATA SC Hard Drive
MDD MAXDIGITALDATA X18 MACH.2 (Dual Actuator) 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (MDD18TSAS51272E-2X18) - [Not a SATA HDD] (Renewed)
Dell 6TB 7.2K 12Gbps NL SAS 3.5 HDD 512e (Renewed)
Seagate 4TB Enterprise Capacity SAS 12Gb s 512n 3.5" Internal Hard Drive Model ST4000NM0025
Seagate ST4000NM0095 4 TB Hard Drive - SAS - 3.5" Drive - Internal - 7200rpm - 128 MB Buffer
How to Choose
Getting the lowest price per TB is straightforward if you follow a few rules.
Buy bigger drives
Price per TB drops as capacity increases. A 16 TB drive almost always costs less per TB than two 8 TB drives. If budget allows, buy fewer large drives rather than many small ones.
Consider refurbished
Datacenter pulls from Seagate Exos and WD Ultrastar lines are often 30–50% cheaper per TB than new retail drives. They have been tested and many sellers include 1–2 year warranties.
Watch both marketplaces
Amazon US and UK prices differ. Currency fluctuations and regional stock can make one marketplace significantly cheaper than the other at any given time.
CMR vs SMR
SMR drives are sometimes a few dollars cheaper per TB but can be painfully slow for random writes and RAID rebuilds. For bulk sequential storage (backups, archives), SMR is fine. For NAS or multi-use, stick to CMR.
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