Comment if 1 drive full, raid. Dual read write armatures (Score 1) 316
If you have 8 TB of capacity in the form of two 4TB drives, you can trade speed for capacity via RAID. With RAID 0, each druve gets half of each KB, doubling throughput.
I've often wondered about building a drive with TWO sets of read/write heads. All drives going back decades read one cylinder at a time. Why not add another set of heads intge other side of the platters and read two cylinders at a time. Rotational latency eould be cut in half. One set could be used for the inner tracks and one for the outer tracks to reduce seek time.
Expanding on that, why does the head read from ONE point. The arm could be lined with a row of ten read heads. We can put millions of pixels on a four inch screen, why can't we put ten reading sensors on a two-inch arm?