Seagate’s HAMR Time: Can’t Touch This…Yet!
March 30, 2012: Seagate is inching closer to the next evolution of disk technology – heat-assisted magnetic recording (HAMR) – with the demonstration of 1 terabit (1 trillion bits) per square inch and the intention of releasing 3.5-inch hard drives with up to 60 terabytes capacity as early as 2015. That’s double the capacity of the current drive technology, Perpendicular Magnetic Recording (PMR), which replaced longitudinal recording, starting in 2006.
PMR technology is running out of time – and space – says Seagate’s Mark Re, senior vice president of heads and media research and development. It is expected to reach its capacity limit near 1 terabit per square inch in the next few years, and given the insatiable demand for more and faster storage, a replacement technology was required. HAMR offers a theoretical areal density limit ranging from 5 to 10 terabits per square inch – 30TB to 60TB for 3.5-inch drives and 10TB to 20TB for 2.5-inch drives.
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