Best HDD Deals Right Now
The cheapest hard drives available today, ranked by cost per terabyte. We track prices across Amazon US and UK hourly so you can find genuine value without digging through dozens of listings.
Quick Verdict
- Who this is for
- Anyone hunting for the lowest cost per terabyte on a hard drive — NAS builders, Plex hoarders, backup shoppers, and bulk-storage buyers.
- What usually wins
- The new drive with the lowest price per TB at 8 TB or above. Refurbished enterprise pulls if you can accept a seller warranty instead of manufacturer coverage.
- Prioritise
- Lowest price per TB at your target capacity. Check both new and refurbished sections — the best deal shifts daily.
Prices updated hourly from Amazon US and UK. All links go directly to the retailer.
Best Value New HDDs
New hard drives offering the lowest cost per terabyte — brand-new retail units with full manufacturer warranty.
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 USB 3.1 Type-C - High-Speed Data Storage for PC, Mac, Laptops, and Gaming Consoles - Durable Design, Compatible with Windows, MacOS, Linux (16.0, TB)
Dell 4TB Hard Drive 7.2K SAS
Western Digital WD4001FYYG-R - Western Digital 4TB 3.5" SAS 7.2K 6Gb/s Hard Drive
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)
MDD 10TB 7200RPM 256MB Cache SAS 12.0Gb/s 3.5inch Internal Enterprise Hard Drive (MDD10TSAS25672E) - [NOT A SATA HDD]
Dell 202V7 4tb 3.5in 7.2k NL SAS 6gbs Hard Drive
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)
High-Capacity Deals (8 TB+)
Large-capacity drives for NAS builders, media libraries, and anyone who needs raw terabytes at a fair price.
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 USB 3.1 Type-C - 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)
MDD 10TB 7200RPM 256MB Cache SAS 12.0Gb/s 3.5inch Internal Enterprise Hard Drive (MDD10TSAS25672E) - [NOT A SATA HDD]
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)
UnionSine External Hard Drive 14TB 3.5" Desktop HDD USB3.0 Storage Compatible for PC, Mac, TV, Desktop, Laptop(Black) HD3513
Seagate Exos 7E10 8TB Internal Hard Drive HDD - 3.5 Inch 512e/4Kn SAS 6GB/s, 7.200 RPM, 256MB Cache and 2M MTBF for Enterprise, Data Centre (ST8000NM017B)
WD 20TB Elements External Hard Drive, Desktop HDD storage, USB 3.0 compatible, Fast Transfer rates, Plug-and-play storage for all your pictures, videos, music and documents, Black
Refurbished & Used HDD Bargains
Recertified enterprise pulls and used drives at steep discounts. Many include seller warranties and are tested before resale.
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)
HGST Ultrastar He 3.5-inch 6000GB 64MB Cache 7200RPM SAS Ultra 512n Helium Platform Enterprise HDD HUS726060ALS640
Seagate 6TB 3.5 Desktop Hard Drive Model ST6000NM0105
DELL 2027V - DELL / WD4001FYYG 4TB 3.5 7.2K NL SAS 6GBPS HDD (Renewed)
HP 695842-001 4TB SAS Hard Drive Disk (HDD) - 7,200 RPM, 3.5-inch form factor, SmartDrive Carier (SC), Midline (MDL), 6Gb per second Transfer Rate (TR)
Dell 6P85J 4TB 7200RPM SAS-6GBITS 128MB Buffer 3.5INCH Form Factor SELF ENCRYPTED Hard Disk Drive WI (Renewed)
Dell 529FG 4TB 7.2K 3.5 SAS 6GBPS Hard Drive (Renewed)
How to Choose
Getting the best HDD deal is mostly about timing and knowing where to look. Here are the factors that matter most.
Price per TB
The single most important metric for value buyers. A lower total price does not mean a better deal if the drive is smaller — always compare on a per-TB basis.
New vs refurbished
New drives include a manufacturer warranty (typically 2–5 years). Refurbished datacenter pulls are often 40–60% cheaper but come with shorter seller warranties. Both are valid depending on your risk tolerance.
Capacity
Larger drives cost more in total but usually deliver a lower price per TB. If you have the budget, buying fewer large drives is more cost-efficient than many small ones.
Recording technology
CMR drives handle random writes and RAID rebuilds better than SMR. For single-drive use or sequential workloads, SMR is fine and often cheaper.
Related Buying Guides
Best NAS Hard Drives
Compare NAS hard drive prices from Seagate IronWolf and WD Red. CMR drives ranked by price per TB for Synology, QNAP, TrueNAS, and Unraid builds.
Best Enterprise Hard Drives
Compare enterprise HDD prices for Seagate Exos and WD Ultrastar. Datacenter-grade drives sorted by price per TB for servers and storage arrays.