For the long-term performance stability test, we set the drive up to run a 20-minute 4K random test with a 30% write, 70% read split, at a Queue Depth of 256 over the entire disk. The 15.36TB DC3000ME averaged 163,679.01 IOPS for the test with a performance stability of 97%, a figure you should expect from a drive aimed at data centre/enterprise usage.