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.
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