Are all IronWolf drives CMR?
Yes. Seagate documents its IronWolf and IronWolf Pro NAS lines as CMR (conventional magnetic recording) across capacities: none are SMR. That makes any IronWolf a safe choice for a NAS RAID array. Verify the exact model against Seagate's documentation if in doubt, but the IronWolf line is consistently CMR.
Last verified July 22, 2026 · 2 official sources checked Updated
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Yes: Seagate's IronWolf and IronWolf Pro NAS drives are documented as CMR across the range. Unlike WD, which split its Red line into SMR (plain Red) and CMR (Red Plus), Seagate kept the entire IronWolf NAS line conventional-recording, so there is no SMR trap to avoid within it.
IronWolf vs IronWolf Pro
- IronWolf: CMR, rated for 1–8 bay NAS, 180 TB/year workload, 3-year warranty, the standard home/small-office NAS drive.
- IronWolf Pro: CMR, 7200 rpm, 550 TB/year workload, 5-year warranty: for busier, larger or business NAS units, and the only option at the largest capacities.
Why this matters
Because every IronWolf is CMR, you can buy on price per terabyte and capacity without checking recording tech per model: a genuine simplicity advantage over cross-shopping WD Reds. All are suited to RAID rebuilds. The table lists in-stock IronWolf and IronWolf Pro drives by price per terabyte.
Seagate IronWolf (CMR) drives in stock, by CA$/TB
Live Amazon.ca prices in CAD, ranked by price per terabyte. The Recording column is verified against manufacturer documentation. Prices checked
| Model | Capacity | Recording | Price | CA$/raw TB | |
|---|---|---|---|---|---|
 Seagate IronWolf Pro 32TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 512MB Cache for RAID Network Attached Storage, Rescue Services (ST32000NTZ00)Newbest price per TB CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by THEKEYKEY · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$1,740Buy on Amazon | 32 TB | CMR ✓ | CA$1,740 | CA$54.37/TB | Buy on Amazon |
 Seagate IronWolf 10TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage (ST10000VN0008) (ST10000VNZ008/N0008)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Deals2You · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$579Buy on Amazon | 10 TB | CMR ✓ | CA$579 | CA$57.91/TB | Buy on Amazon |
 Seagate IronWolf Pro 20TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services (ST20000NTZ01/ST20000NT001)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by THEKEYKEY · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$1,235Buy on Amazon | 20 TB | CMR ✓ | CA$1,235 | CA$61.75/TB | Buy on Amazon |
 Seagate IronWolf 16TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6GB/S 7200 RPM 256MB Cache for Raid Network Attached Storage, with Rescue Service (ST16000VN001)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by MAPOGO LION LLC · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$1,028Buy on Amazon | 16 TB | CMR ✓ | CA$1,028 | CA$64.25/TB | Buy on Amazon |
 Seagate IRONWOLF 6TB NAS 3.5IN 6GB/S SATA 256MBNew CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Deals2You · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$389Buy on Amazon | 6 TB | CMR ✓ | CA$389 | CA$64.85/TB | Buy on Amazon |
 Seagate IronWolf Pro 10TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services - FFP (ST10000NTZ01)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Deals2You · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$650Buy on Amazon | 10 TB | CMR ✓ | CA$650 | CA$65.00/TB | Buy on Amazon |
 Seagate IronWolf Pro 14TB Enterprise NAS Internal HDD Hard Drive – CMR 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage, Rescue Services - FFP (ST14000NTZ01)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Deals2You · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$930Buy on Amazon | 14 TB | CMR ✓ | CA$930 | CA$66.43/TB | Buy on Amazon |
 Seagate IronWolf Pro 3.5" 8TB HDD with Data Recovery Service 5 Year Warranty 256MB 7200rpm 24 Hours Service for PC NAS RV Sensor ST8000NE001New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Deals2You · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$559Buy on Amazon | 8 TB | CMR ✓ | CA$559 | CA$69.88/TB | Buy on Amazon |
 Seagate IronWolf 4TB NAS Internal Hard Drive HDD – CMR 3.5 Inch SATA 6Gb/s 5900 RPM 64MB Cache for RAID Network Attached Storage, Rescue Services – Frustration Free Packaging (ST4000VNZ06)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Generic Computer · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$290Buy on Amazon | 4 TB | CMR ✓ | CA$290 | CA$72.50/TB | Buy on Amazon |
 Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/ST4000VN006)New CMR recording, SATA NAS drive rated for 24/7 use Amazon.ca · sold by Aero Malls · one bare internal drive; shipping and taxes not included · checked Oct 7, 2026CA$315Buy on Amazon | 4 TB | CMR ✓ | CA$315 | CA$78.75/TB | Buy on Amazon |
Related questions
Sources
Every technical claim on this page is checked against manufacturer and standards documentation. Dates are when each source was last reviewed.
- Seagate: IronWolf / SkyHawk product documentation (CMR) (checked 2026-07-22)
- Seagate: CMR/SMR drive list (checked 2026-07-22)