Why I purchased Seagate IronWolf drives

I recently purchased two
6TB Seagate IronWolf drives. They are similarly priced to the
WD Reds but have a faster RPM of 7200 compared to 5400 on the Reds. The IronWolf also have 128MB of cache vs 64MB on the Red. To get a drive similar in spec to the IronWolf would require purchasing
Red Pro drives, which are a lot more expensive.