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 400GB SNV3400-400G averaged 123,560 IOPS for the test with a performance stability of 79%, which the sort of figure want you'd want to see from a cache drive.