Now that my class is wrapping up, time to try out some Seagate MACH.2 (read: dual actuator!) HDDs. The performance from these has been crazy - over 500 MB/s sustained sequential reads per drive. Comes with more power consumption, heat, and I assume failure rate... But looking forward to seeing how these perform in the real world.
@lucas If you're careful about how you're partitioning & know your access patterns, you "can" get 2x the IOPS. But I suspect that's easier said than done. I have the SATA version which presents as a single device, and you have to partition it into two halves (one for each actuator), then organize your data on each half. When each acutator is being accessed independently, you're golden! Anything requesting access from the same actuator is going to have the usual contention issues though.
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