Best 12 TB Hard Drives
12 TB is one of the most popular capacity points for NAS builders and budget-conscious storage shoppers. It sits in the sweet spot between high density and affordable per-TB pricing, large enough to meaningfully fill a bay slot, but using mature platter technology that keeps costs down. At 12 TB you will find well-established models across NAS, enterprise, and general-purpose lines from both Seagate and Western Digital.
Why 12 TB?
12 TB drives typically offer some of the lowest per-TB pricing because they use proven, high-volume platter configurations. Four 12 TB drives in RAID 5 give you ~36 TB usable, enough for a substantial media library, backup target, or small-business file server. For many buyers, 12 TB hits the optimal cost-per-TB sweet spot without overspending on cutting-edge capacities.
Quick Verdict
- Who this is for
- Homelab and small-server builders filling bays one at a time, and NAS owners stepping up from 4 to 8 TB drives.
- What usually wins
- A recertified enterprise 12 TB is usually the best value on this page. New Exos, Ultrastar and IronWolf Pro all sit close together, so buy on price per TB and stated warranty rather than on brand.
- Prioritise
- Lowest price per TB among CMR drives that state a warranty. Check the interface before you buy.
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 HPE 12TB SATA 6G MIDLINE 7.2K LFF LP Helium DS FIRMWARE HD 881787-B21 882401-001, 12 TB used, at $299.00 ($24.92/TB) on Amazon.com. Check the current price.
Best Value 12 TB Drives
All new 12 TB hard drives ranked by price per terabyte. The best deals across enterprise, NAS, and standard lines.
OSENTRiX BX100 12TB USB 3.2 Gen 2 USB-C External Hard Drive for Windows or MacOS Desktop PC/Laptop
Avolusion PRO-G2 12TB USB 3.2 Gen 2 (10Gbps) USB-C External Hard Drive for Windows/MacOS (Silver)
HGST Ultrastar He12 | HUH721212ALE601 | 0F27454 | 12TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" Cache | 512E | BitLocker Hard Drive Encryption | Power Disable Function |
Avolusion HDDGear Pro X 12TB USB 3.0 External Gaming Hard Drive (Pre-formatted for Xbox One X, S, Original)
MDD MAXDIGITALDATA 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5-inch Internal Hard Drive for Surveillance Storage (MD12TBGSA25672DVR) - 3 Years Warranty
MDD 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5inch Internal Desktop Hard Drive, MD12TBGSA25672
T2YHT 0T2YHT 12TB 7.2K 6Gb/s SATA 3.5" Hard Drive HUH721212ALE600
X16 12TB 3.5" Hard Drive ST12000NM009G 7.2K 2MT233-150 7KT9W
NAS 12 TB Drives
IronWolf and WD Red 12 TB models designed for always-on NAS enclosures. Firmware optimised for RAID arrays and multi-bay vibration tolerance.
Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 GB/s, CMR, 512 MB Cache, 3.5" - WD120EFBX
Western Digital 12TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD122KFBX
Seagate IronWolf Pro ST12000NE0008 12 TB Hard Drive - 512E Format - SATA 600-3.5" Drive - Internal - 7200RPM - 256 MB Buffer - Hot Pluggable
Seagate IronWolf Pro 3.5" 12TB HDD with Data Recovery Service 5 Year Warranty 256MB 7200rpm 24 Hours Service for PC NAS RV Sensor ST12000NE0008
Seagate IronWolf ST12000VN0007 12 TB 3.5 Internal Hard Drive - SATA - 7200rpm - 256 MB Buffer
Seagate IronWolf Pro 12TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage Data Recovery Service – Frustration Free Packaging (ST12000NEZ008)
Western Digital 12TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD120EFAX
Western Digital 12TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" - WD121KFBX
Enterprise 12 TB Drives
Seagate Exos and WD Ultrastar 12 TB models for server and datacenter use. 24/7 rated with 5-year warranties and high workload endurance.
WD-40 Ultrastar HE12 12TB SAS 512E
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Seagate-IMSourcing Exos X16 ST12000NM003G 12 TB Hard Drive - Internal - SATA [SATA/600]
Seagate Exos X24 12TB 3.5" 6 Gb/s SATA III Internal Hard Drive
Seagate Exos X14 ST12000NM0008 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600)
HGST Ultrastar He12 HUH721212AL4201 12 TB Hard Drive - SAS [12Gb/s SAS] - 3.5 Drive - Internal
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
Hgst 198944 Hard Drive 0f30146 3.5 Inch 12tb Es 72000rpm 256mb Sata 6gb/s 512e Se Ultrastar He12bare
HGST Ultrastar He12 | HUH721212ALE600 | 12TB 7.2K RPM SATA-6Gb/s 3.5" 256MB cache Hard Disk Drive
Western Digital HGST Ultrastar He12 HUH721212ALE600 12 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - 7200rpm - 256 MB Buffer - 5 Year Warranty
Refurbished 12 TB Drives
Used and recertified 12 TB drives at reduced prices. Enterprise datacenter pulls that offer strong value for homelabs, backup targets, and non-critical storage.
Genuine HUH721212AL4200 12TB HDD 7200 RPM SAS 12Gb/s LFF Drive Original
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HPE 12 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.
Genuine 881779-B21 12TB SAS 7.2K LFF SC HE 512E DS HDD Original
SAS interface. Needs a host bus adapter, it will not plug into a normal motherboard.
HPE 12TB SATA 6G MIDLINE 7.2K LFF LP Helium DS FIRMWARE HD 881787-B21 882401-001
Avolusion PRO-T5 Series USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop (White) - 2 Year Warranty (12TB) (Renewed)
MDD 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5inch Internal Desktop Hard Drive, Mechanical Hard Disk (Renewed)
Seagate-IMSourcing Exos X16 ST12000NM003G 12 TB Hard Drive - Internal - SATA [SATA/600]
Avolusion PRO-X USB 3.0 External Hard Drive for WindowsOS Desktop PC/Laptop - (12TB) (Renewed)
How to Choose
12 TB is the capacity where the used server market and the retail NAS market meet, so the same shelf holds very different drives at very similar prices. Four things separate them.
SATA or SAS
Server pulls at this capacity are frequently SAS, which needs a host bus adapter and will not plug into an ordinary motherboard. SAS listings cluster at the cheap end of any price-per-TB sort precisely because most buyers cannot use them. Check the interface field before the price.
CMR, and check the model number
Everything sensible at 12 TB is CMR, but families are not a guarantee and manufacturers have shipped both technologies under one name. Look up the exact model number rather than trusting the product line.
New or recertified
Recertified enterprise pulls are the cheapest route to 12 TB by a wide margin. Buy the listing that states a warranty in months: on the used shelf a long stated warranty is routinely cheaper per terabyte than no warranty at all, which is backwards from what most people expect.
Bays versus capacity
If you have spare bays and expect to keep growing, 12 TB is a sensible unit to add repeatedly. If bays are tight, price 16 and 18 TB before committing, because the per-terabyte gap narrows quickly above 12 TB.
Frequently Asked Questions
Is 12TB a good size for a hard drive?
12 TB is a sweet spot for many buyers. It is large enough for a serious media library or NAS bay, while typically offering better price-per-TB than 8 TB drives. For NAS users, 12 TB drives in a 4-bay enclosure give you 36–48 TB of usable space depending on your RAID level.
What is the cheapest 12TB hard drive?
It changes week to week, so the table above is the answer rather than anything I could write here. As a rule the cheapest 12 TB drives are refurbished enterprise pulls (Seagate Exos X12, WD Ultrastar HC520) rather than new NAS-branded drives, and the gap between the two is usually large enough to be worth the shorter warranty if the array has parity. I re-check every listing daily, so sort by price per TB and take the top row.
Which 12TB drive is best for NAS?
The Seagate IronWolf 12TB and WD Red Plus 12TB are purpose-built for NAS use with CMR recording and vibration compensation. For budget builds, a refurbished Exos X12 or Ultrastar HC520 delivers the same enterprise reliability at a lower price. They just run louder.
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