This HDD makes use of what is called MACH.2 Multi-Actuator technology, basically two magnetic heads and a bit of technology that sounds familiar to raid.
Multi-actuator technology involves dividing a disk drive's platter reading and writing head stack into upper and lower halves and operating them in parallel to increase the drive's overall IO speed mentions cdrlabs. Seagate demonstrated up to 480MB/s sustained throughput - the fastest ever from a single hard drive, and 60 percent faster than a 15K drive;
The technology doubles IOPS performance in a single hard drive by using two independent actuators that can transfer data to the host computer concurrently. Seagate's engineering team also demonstrated reliability of its HAMR (Heat-Assisted Magnetic Recording) technology hard drives. Seagate revealed that its HAMR read/write heads have achieved unprecedented results in long-term reliability tests that surpass customer requirements by a factor of 20.
HAMR is a way of shrinking a disk drive's magnetised bits beyond the limits of current PMR (Perpendicular Magnetic Recording) tech, in which progressively smaller bits become unstable with error-prone bit values. The industry's standard specification for nearline hard drive reliability anticipates that a drive will be able to transfer 550TB per year, or 2750TB total over a five-year period. On a hard drive with 18 read/write heads, each head is expected to transfer 152TB reliably over five years. Seagate's development team has now demonstrated a single HAMR read/write head transferring data for 6000 hours reliably, equaling 3.2 Petabytes of data transferred on a single head. That's more than 20 times the amount of data required by the spec.
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