Which is better for a large NAS array?

The IronWolf Pro 28TB, because it packs more capacity per bay and carries a 550TB/year workload rating. The Red Pro is the better pick if you value ArmorCache power-loss protection and lower idle power more than raw capacity.

Seagate rates the IronWolf Pro at 2.5 million hours MTBF; WD does not publish an MTBF figure for the Red Pro in this listing. Both are 7200 rpm CMR drives built for 24/7 NAS use, so real longevity depends on cooling and vibration control in your enclosure.

Is the WD Red Pro worth $299.99?

At $299.99 at Newegg as of November 7, 2026, it is a fair price for a 7200 rpm NAS drive with ArmorCache, and it is well below its recent high of $672.55. Whether it beats the IronWolf Pro depends on the Seagate's current price per terabyte, which you should check before buying.

Do either of these have hardware encryption?

No. Both list no encryption support, so if you need SED drives you will have to look at other models in each line.

Which runs cooler and uses less power?

The WD Red Pro idles at 3.4 W versus 6.8 W for the IronWolf Pro. The Seagate's active figure is 8.3 W; WD does not state an active figure here.

Can I mix them in one NAS?

You can, but matching drives keeps RAID rebuild times and performance predictable. Mixing 28TB and smaller Red Pro drives also wastes capacity unless you use a redundant layout that tolerates unequal sizes.

Seagate IronWolf Pro 28TB vs WD Red Pro NAS Hard Drive

Buy the Seagate IronWolf Pro 28TB if you want the most capacity per bay and the longest warranty-backed endurance rating; it is the only one of the two with a stated 28TB capacity and 550TB/year workload limit. Buy the WD Red Pro if you want a proven NAS drive with ArmorCache power-loss protection and a large review base, and capacity in the 20-24TB range is enough. The WD Red Pro's best new price is $299.99 at Newegg as of November 7, 2026; no price was given for the IronWolf Pro 28TB, so compare its live listing before deciding.

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