Seagate Exos in a NAS: the enterprise value play
By Amara Okonkwo · Data checked by Owen Nakamura · Updated · Prices checked Seagate Exos is an enterprise CMR drive (7200 rpm, a 550 TB/yr workload rating and a 5-year warranty) that frequently posts the lowest CA$/TB of any drive in Canada, especially in the large capacities. It works perfectly well in a home NAS; the trade-off is noise and vibration, because it is built for a rack. Buy it for value in a closet or basement, not beside your desk. The table shows current CA$/TB on Amazon.ca.
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Why Exos is often the cheapest per TB
Exos is sold in datacentre volumes, which pushes its price per terabyte below the consumer NAS lines surprisingly often, particularly at 16, 20 and 24 TB. It is fully CMR, rated at 550 TB/yr with a 5-year warranty and a 2.5-million-hour MTBF, so on reliability it gives up nothing to IronWolf Pro. For a Canadian buyer chasing the lowest cost to fill a large array, it is frequently the answer.
The noise and power trade-off
Exos is a 7200 rpm enterprise drive, so it is louder and vibrates more than a NAS-tuned drive, and it draws a little more power. In a basement, garage or closet that is a non-issue; in a living room or bedroom it is audible. Multiple Exos drives in one enclosure also want good decoupling and airflow.
That is why our NAS-drive tables lead with NAS-rated families and treat Exos as the value option rather than the default: it is the right drive for the right room. If quiet matters more than a few dollars per TB, an IronWolf or Red Plus is the better pick.
Seagate Exos on Amazon.ca, by CA$/TB
Seagate Exos enterprise drives in stock on Amazon.ca, ranked by price per terabyte in CAD.
| Model | Capacity | Recording | Price | CA$/raw TB | |
|---|---|---|---|---|---|
 Seagate Exos X22 22TB SATA 6Gb/s 7200RPM 3.5" Enterprise Hard Drive - ST22000NM001ENewbest price per TB CMR recording, SATA enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,157Buy on Amazon | 22 TB | CMR ✓ | CA$1,157 | CA$52.58/TB | Buy on Amazon |
 Seagate Exos X24 ST20000NM002H 20TBNew CMR recording, SATA enterprise drive Amazon.ca · sold by THEKEYKEY · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,165Buy on Amazon | 20 TB | CMR ✓ | CA$1,165 | CA$58.25/TB | Buy on Amazon |
 Seagate Exos X24 24TB Enterprise Internal Hard Drive HDD - 6GB/s SATA 7200RPM 2.5M MTBF (ST24000NM002H)New CMR recording, SATA enterprise drive Amazon.ca · sold by THEKEYKEY · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,400Buy on Amazon | 24 TB | CMR ✓ | CA$1,400 | CA$58.33/TB | Buy on Amazon |
 Seagate Exos M 28TB Enterprise Internal Hard Drive HDD - 3.5in 6GB/s SATA 7200RPM 2.5M MTBF (ST28000NM003K)New CMR recording, SATA enterprise drive Amazon.ca · sold by THEKEYKEY · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,635Buy on Amazon | 28 TB | CMR ✓ | CA$1,635 | CA$58.39/TB | Buy on Amazon |
Seagate Exos X24 3.5" Internal Hard Drive - 12TB, Single, SATA III 6 Gb/sNew CMR recording, SATA enterprise drive Amazon.ca · sold by OneDealOutlet Canada · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$890Buy on Amazon | 12 TB | CMR ✓ | CA$890 | CA$74.15/TB | Buy on Amazon |
 Seagate Exos 1TB Internal Hard Drive Enterprise HDD – 3.5 Inch 6Gb/s 7200 RPM 128MB Cache for Enterprise, Data Center – Frustration Free Packaging (ST1000NM0008)New CMR recording, SATA enterprise drive Amazon.ca · sold by Grakolver · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$179Buy on Amazon | 1 TB | CMR ✓ | CA$179 | CA$179.00/TB | Buy on Amazon |
 Seagate Enterprise Capacity ST2000NM000A 2TB 7200RPM SATA 6.0 GB/s 256MB Enterprise Hard Drive (3.5 inch, Exos 7E8 HDD 512N SATA)New CMR recording, SATA enterprise drive Amazon.ca · sold by GUTTIDIRECT · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$641Buy on Amazon | 2 TB | CMR ✓ | CA$641 | CA$320.50/TB | Buy on Amazon |
Show renewed and used offers (8)
Kept out of the table above: a renewed or used drive has a different warranty and an unknown history, so its price per TB is not comparable with a new drive’s. Each row shows its condition.
| Model | Capacity | Recording | Price | CA$/raw TB | |
|---|---|---|---|---|---|
 Seagate 18TB HDD Exos X18 7200 RPM SATA 6Gb/s 3.5-Inch CMR Enterprise Hard Drive - ST18000NM000J (Renewed)Renewed CMR recording, SATA enterprise drive Amazon.ca · sold by Redefine IT · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$920Buy on Amazon | 18 TB | CMR ✓ | CA$920 | CA$51.11/TB | Buy on Amazon |
 Seagate Exos 22TB SATA HDD 6Gb/s 7200RPM 3.5-inch Enterprise Hard Drive (ST22000NM000C) (Renewed)Renewed CMR recording, SATA enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,146Buy on Amazon | 22 TB | CMR ✓ | CA$1,146 | CA$52.10/TB | Buy on Amazon |
 HP/Seagate Exos X16 ST12000NM006J 12TB 7200 RPM SAS 12Gb/s 512e 3.5in Enterprise Hard Drive MB012000JYCJF P44753-001 (Renewed)RenewedSAS CMR recording, SAS enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$642Buy on Amazon | 12 TB | CMR ✓ | CA$642 | CA$53.49/TB | Buy on Amazon |
 Seagate Exos ST24000NM000C 24TB 7.2K RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)Renewed CMR recording, SATA enterprise drive Amazon.ca · sold by Redefine IT · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,308Buy on Amazon | 24 TB | CMR ✓ | CA$1,308 | CA$54.48/TB | Buy on Amazon |
 Seagate Exos X20 ST18000NM003D 18TB 7.2K RPM 512e SATA 6Gb/s 3.5in Enterprise Hard Drive (Renewed)Renewed CMR recording, SATA enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,076Buy on Amazon | 18 TB | CMR ✓ | CA$1,076 | CA$59.79/TB | Buy on Amazon |
 EXOS X18 18TB SAS 3.5IN 7200RPM HELIUM 512E/4K (Renewed)RenewedSAS CMR recording, SAS enterprise drive Amazon.ca · sold by Redefine IT · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,081Buy on Amazon | 18 TB | CMR ✓ | CA$1,081 | CA$60.07/TB | Buy on Amazon |
 Seagate Exos X20 ST20000NM002D 512E/4KN SAS 12Gb/s 20TB 7200RPM 256MB Enterprise Hard Drive (Renewed)RenewedSAS CMR recording, SAS enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,285Buy on Amazon | 20 TB | CMR ✓ | CA$1,285 | CA$64.27/TB | Buy on Amazon |
 Seagate Exos X20 ST20000NM003D 20TB 7200 RPM SAS 12Gb/s 512e 256MB SED 3.5in Enterprise Hard Drive (Renewed)RenewedSAS CMR recording, SAS enterprise drive Amazon.ca · sold by ServerPartDeals · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$1,334Buy on Amazon | 20 TB | CMR ✓ | CA$1,334 | CA$66.68/TB | Buy on Amazon |
Show SAS drives (1)
SAS drives need a SAS controller and do not work in the SATA bays of a typical home or small-business NAS.
| Model | Capacity | Recording | Price | CA$/raw TB | |
|---|---|---|---|---|---|
 Seagate Exos X16 ST12000NM002G 12TB 7.2K RPM SAS 12Gb/s 256MB 3.5in Enterprise Hard DriveNewSAS CMR recording, SAS enterprise drive Amazon.ca · sold by Redefine IT · one bare internal drive; shipping and taxes not included · checked Oct 15, 2026CA$669Buy on Amazon | 12 TB | CMR ✓ | CA$669 | CA$55.71/TB | Buy on Amazon |
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Frequently asked questions
Can I use Seagate Exos in a home NAS?
Yes. Exos is CMR, 7200 rpm, 550 TB/yr and 5-year warranty: reliable in any NAS. The only real trade-off is noise and vibration, since it is built for a rack. Fine in a closet or basement, louder than ideal in a living space.
Is Exos cheaper than IronWolf?
Often, yes, especially at 16 TB and up, Exos frequently posts the lowest CA$/TB in Canada because it is sold in datacentre volumes. You give up some quiet, not reliability. The live table shows the current gap.
Is Exos CMR?
Yes, Exos is conventional magnetic recording (CMR), safe for RAID. Seagate's SMR drives are in other lines, not Exos.
Amara Okonkwo works out what a NAS costs to run over a year on provincial Canadian hydro rates, and ranks drive prices by Canadian dollars per terabyte, using the site's Amazon.ca price sync.
Data checked by Owen Nakamura, Technical editor (data checking)