IOPS Scaling

In these tests, we tested the drive's ability to tackle multiple input/output operations. Again, we compared the 3 TB Western Digital Red (WD30EFRX) to the 3 TB Western Digital Caviar Green (WD30EZRX), because it was the closest match and would have been used instead of the WD Red in a NAS system. For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.

4 KB Sequential Read

Surprisingly, when more transactions were piled on, the WD Red's small sequential read performance almost tripled, jumping from 14% slower than the WD Green to almost twice as fast!

4 KB Sequential Write

The same thing happened for small sequential read performance. When the number of simultaneous transactions increased, the WD Red's performance jumped and it was much faster than the the WD Green.

512 KB Sequential Read

512 KB Sequential Write

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