Seagate IronWolf Pro 20TB HDD Review

CrystalDiskMark is a useful benchmark to measure theoretical performance levels of hard drives and SSDs. We are using V6.0. to test HDD drives.

In the CrystalDiskMark 4K QD32 T1 test, the 20TB IronWolf Pro read test result of 3.489MB/s sees it sitting in second place in our results chart just behind the 14TB IronWolf Pro. However, its write result of 3.259MB/s is much better than the 14TB drive but not as fast as the 18TB version which sits in third place.

Looking at the benchmark result screen we could confirm the official transfer rate of 285MB/s with a Sequential read result of 282MB/s. Sequential writes were a little further back at 279MB/s.

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