Seagate IronWolf vs IronWolf Pro: Same Name, Different Animals
Compatibility data on this site last refreshed 2026-10-29 · reading time ~3 min
Both IronWolf tiers are CMR and both are heavily represented on Synology's compatibility list. The differences are workload rating, speed and warranty — and whether your build can use them.
IronWolf (non-Pro)
5400-7200rpm by capacity, 180TB/year workload rating, 3-year warranty, built for 1-8 bay NAS. For a home Synology streaming Plex and backing up laptops, this is plenty of drive. On Synology's HCL, non-Pro IronWolf part numbers cover the widest model range of any third-party series.
IronWolf Pro
7200rpm at every capacity, 550TB/year workload, 5-year warranty, rated for up to 24-bay enclosures, and larger cache. In practice: faster sustained writes, faster RAID rebuilds, more headroom for scrubbing-heavy schedules and multi-user DSM services.
How to decide
- 2-4 bays, home workload, gigabit network: IronWolf
- 5+ bays, sustained writes (surveillance recording, heavy Docker/VM use): IronWolf Pro
- Rebuild-speed anxiety on a large array: Pro's 7200rpm meaningfully shortens the window
- Price gap under 10% at your capacity: take the Pro for the warranty alone
Quick answers
Are both IronWolf tiers CMR?
Yes — CMR across both, unlike WD's non-Plus Red line.
Can I mix IronWolf and IronWolf Pro in one array?
You can, but the array follows the slowest drive per stripe. For consistent rebuild behavior, prefer one tier.
Check your exact model
Compatibility is per machine and per part number. Pick your model for its full official drive list: