Western Digital Red Pro vs Seagate IronWolf Pro
Both lines are on Synology's official compatibility list — this is not a "which works" question, but a "which fits your machine and workload" one. Everything below is read from Synology's own HCL, refreshed daily.
Head-to-head on the official list
| Western Digital Red Pro | Seagate IronWolf Pro | |
|---|---|---|
| Listed on Synology HCL | 164 models ✓ | 151 models |
| Largest listed capacity | 14 TB | 16 TB ✓ |
| Smallest listed capacity | 2 TB | 2 TB |
| Part numbers on list | 13 | 21 ✓ |
| Product line | Enterprise NAS | Enterprise NAS |
Which should you buy?
Coverage-wise, Western Digital Red Pro appears on more Synology machines (164 vs 151) — for an older or unusual model that margin can matter. Within the same tier, the honest answer is: pick the cheaper part number at your target capacity, then verify it on your exact model's page.
Both lines overlap on 151 Synology models — if yours is one of them, either drive is officially supported.
Popular part numbers (most-listed 12 of 13 / 21)
Western Digital Red Pro
- WD2002FFSX - 68PF8N0 — 2TB, 150 models
- WD6001FFWX - 68Z39N0 — 6TB, 143 models
- WD5001FFWX - 68Z39N0 — 5TB, 140 models
- WD2001FFSX — 2TB, 118 models
- WD3001FFSX — 3TB, 118 models
- WD4001FFSX - 68JNUN0 — 4TB, 117 models
- WD8003FFBX - 68B9AN0 — 8TB, 110 models
- WD4003FFBX — 4TB, 107 models
- WD6003FFBX - 68MU3N0 — 6TB, 104 models
- WD101KFBX - 68R56N0 — 10TB, 101 models
- WD121KFBX — 12TB, 88 models
- WD102KFBX - 68M95N0 — 10TB, 80 models
Seagate IronWolf Pro
- ST4000NE0025 - 2EW107 — 4TB, 145 models
- ST6000NE0023 - 2EX110 — 6TB, 145 models
- ST2000NE0025 - 2FL101 — 2TB, 145 models
- ST4000NE001 - 2MA101 — 4TB, 104 models
- ST8000NE001 - 2M7101 — 8TB, 103 models
- ST2000NE001 - 2M5101 — 2TB, 103 models
- ST6000NE000 - 2KR101 — 6TB, 103 models
- ST8000NE0008 - 2JN101 — 8TB, 94 models
- ST8000NE0021 - 2EN112 — 8TB, 93 models
- ST14000NE0008 - 2JK101 — 14TB, 91 models
- ST6000NE0021 - 2EN11C — 6TB, 91 models
- ST10000NE0008 - 2PL103 — 10TB, 90 models
Synology models that list both lines
These machines officially support both Western Digital Red Pro and Seagate IronWolf Pro — your real decision is workload and price, not compatibility.