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6TB hard drives: compare prices and CMR NAS choices

Find recently checked 6TB internal HDD offers. For a NAS, match the exact drive model and interface before choosing by price.

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Choosing a 6TB NAS drive?

Start with documented CMR SATA models such as WD Red Plus WD60EFPX, Seagate IronWolf ST6000VN006 and Toshiba N300 MN10ADA600S, subject to your enclosure’s compatibility list. A family name or 6TB capacity alone does not establish recording technology. Compare the same condition and warranty provider.

10 offers by price per TB

See all 43 listings

We found 43 recently priced 6TB Hard Drives (new), showing the top 10 by price per TB. Prices start at $159.99, with the lowest price per TB currently at $26.67/TB.

#	Product	Capacity	Condition	Price / TB	Price	Region
1	HGST, a Western Digital Company Ultrastar 7K6000 6000GB 7200RPM SATA 512E Ultra ISE 128MB Cache 3.5-Inch Internal Bare or OEM Drives 0F23001 Internal 3.5"HDD Listed warranty: 60 months · verify seller 6TB · New · Amazon US Price checked Oct 27, 2026 18:11 UTC	6 TB	New	$26.67 /TB	$159.99	us	Amazon ↗
2	HGST Ultrastar He8 Helium 6TB 3.5-Inch 7200RPM SATA ULTRA 512e SE 128MB Cache Internal Bare or OEM Hard Drive - HUH728060ALE604 / 0F23669 Internal 3.5"HDD Listed warranty: 60 months · verify seller 6TB · New · Amazon US Price checked Oct 27, 2026 18:11 UTC	6 TB	New	$27.33 /TB	$164.00	us	Amazon ↗
3	Seagate ST6000NM0024 6TB 7.2K SATA 3.5" HDD 3.5"HDD 6TB · New · Amazon US Price checked Oct 27, 2026 18:09 UTC	6 TB	New	$28.16 /TB	$168.95	us	Amazon ↗
4	HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive Internal 3.5"HDD 6TB · New · Amazon US Price checked Oct 27, 2026 18:11 UTC	6 TB	New	$31.67 /TB	$189.99	us	Amazon ↗
5	Toshiba MG04ACA600E 6TB 3.5" SATA 6GBPS Enterprise HDD 3.5"HDD 6TB · New · Amazon US Price checked Oct 27, 2026 22:24 UTC	6 TB	New	$31.67 /TB	$189.99	us	Amazon ↗
6	WD 6TB 3.5" AE Datacenter Archive SATA III 64 MB Cache Enterprise Hard Drive (WD6001F4PZ) 3.5"HDD 6TB · New · Amazon US Price checked Oct 27, 2026 22:25 UTC	6 TB	New	$33.33 /TB	$199.99	us	Amazon ↗
7	ST6000NM0115 3.5"-Inch HDD 6TB 7200 RPM 512e SATA 6Gb/s 256MB Cache Internal Hard Drive Internal 3.5"HDD 6TB · New · Amazon US Price checked Oct 27, 2026 22:24 UTC	6 TB	New	$37.50 /TB	$225.00	us	Amazon ↗
8	(Old Model) Seagate 6TB Desktop HDD SATA 6Gb/s NCQ 128MB Cache 7200RPM 3.5-Inch Internal Bare Drive ST6000DM001 3.5-inchHDD ST6000DM001 specifications → 6TB · New · Amazon US Price checked Oct 27, 2026 22:23 UTC	6 TB	New	$40.67 /TB	$244.00	us	Amazon ↗
9	Seagate Barracuda 6TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 5400 RPM 256MB Cache for Computer Desktop PC (ST6000DM003) 3.5-inchHDD Listed warranty: 24 months · verify seller ST6000DM003 specifications → 6TB · New · Amazon US Price checked Oct 27, 2026 22:26 UTC	6 TB	New	$41.50 /TB	$249.00	us	Amazon ↗
10	Seagate Barracuda® 6TB Internal Hard Drive 8.9 cm (3.5 Inches) SATA III ST6000DM003 Bulk 3.5-inchHDD ST6000DM003 specifications → 6TB · New · Amazon US Price checked Oct 27, 2026 22:26 UTC	6 TB	New	$44.75 /TB	$268.48	us	Amazon ↗

See all 43 listings

Amazon US · exact models

Compare the hardware behind the price

Examples with recently checked new offers. These specification comparisons are not a benchmark ranking. As an Amazon Associate I earn from qualifying purchases.

New listing

Seagate IronWolf

ST6000VN006 · 6TB

CMR SATA NAS model. Check the enclosure compatibility list and the selected seller’s condition, warranty and returns.

$420.79$70.13/TB

View new offer on Amazon ↗ Checked Oct 27, 2026 22:22 UTC. Amazon's price and availability at purchase apply.

New listing

Western Digital WD Red Plus

WD60EFPX · 6TB

CMR SATA NAS model. Check the enclosure compatibility list and the selected seller’s condition, warranty and returns.

$289.99$48.33/TB

View new offer on Amazon ↗ Checked Oct 27, 2026 22:23 UTC. Amazon's price and availability at purchase apply.

What to Check Before Buying a 6TB Hard Drive

Exact model, not family name

Use the full part number to verify recording method and specifications. Closely named drives can differ in recording technology, RPM and workload limits.

Capacity per bay

Two 6TB drives mirrored provide 6TB before overhead, about 5.5TiB in binary units. Compare 8TB options before filling your final free bay.

Replacement requirements

For an existing pool, follow the NAS vendor’s replacement procedure and size requirements. A larger replacement may not immediately increase the pool’s usable space.

Actual offer coverage

Check whether warranty comes from the manufacturer or seller, especially for OEM and renewed offers. An eligible-new-drive specification does not establish coverage for every listing.

Frequently Asked Questions

Are all 6TB NAS hard drives CMR?

Do not infer recording technology from capacity or a short family name. Verify the exact model in manufacturer documentation and check the enclosure compatibility list. The model links here lead to capacity-specific specifications.

Is 6TB or 8TB better value?

Compare the current total price and price per TB in the same condition. A larger drive can offer cheaper capacity while still costing more upfront. Account for required usable space, redundancy and the number of free bays.

How much space do two 6TB NAS drives provide?

A two-drive RAID 1 mirror provides 6TB before overhead, about 5.5TiB in binary units. It tolerates one member failing but does not replace a separate backup.

Can I replace a smaller NAS drive with a 6TB HDD?

Check the exact enclosure and storage-pool rules first, including the minimum replacement size. Follow the supported replacement and rebuild procedure. Usable capacity may only grow after additional members are replaced or the pool is expanded.

Sources and further reading

Narrow your shortlist by capacity and condition

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