Mark Kryder
Mark Howard Kryder (born October 7, 1943 in
Kryder was elected a member of the National Academy of Engineering in 1994 for contributions to the understanding of magnetic domain behavior and for leadership in information storage research.
He is known for "Kryder's law", an observation from the mid-2000s about the increasing capacity of magnetic hard drives.
Kryder's law projection
A 2005
Inside of a decade and a half, hard disks had increased their capacity 1,000-fold, a rate that Intel founder Gordon Moore himself has called "flabbergasting."
Kryder's Law[2]
In 2005, commodity drive density of 110 Gbit/in2 (170 Mbit/mm2) had been reached, up from 100 Mbit/in2 (155 Kbit/mm2) circa 1990.
In 2009, Kryder
The validity of the Kryder's law projection of 2009 was questioned halfway into the forecast period, and some called the actual rate of areal density progress the "Kryder rate". As of 2014, the observed Kryder rate had fallen well short of the 2009 forecast of 40% per year. A single 2.5-inch platter stored around 0.3 terabytes in 2009 and this reached 0.6 terabytes in 2014. The Kryder rate over the five years ending in 2014 was around 15% per year. To reach 20 terabytes by 2020, starting in 2014, would have required an implausibly high Kryder rate of better than 80% per year.[5]
By 2019, it was observed that Kryder's law "has proven to be outdated as the cost of media storage is decreasing at a slower pace than in the past and is now stabilising."[6]
Awards and honors
Mark H. Kryder is an elected member of the
References
- ^ a b c "2007 George E. Pake Prize Recipient". American Physical Society. 2007.
- ^ PMID 16053134.
- ^ Sadik C. Esener; Mark H. Kryder; et al. (June 1999). "The Future of Data Storage Technologies" (PDF). International Technology Research Institute. p. 85. Retrieved 16 October 2011.
- S2CID 16550469.
- ^ Mellor, Chris (2014-11-10). "Kryder's law craps out: Race to UBER-CHEAP STORAGE is OVER". theregister.co.uk. UK: The Register. Retrieved 2014-11-12.
Currently 2.5-inch drives are at 500GB/platter with some at 600GB or even 667GB/platter – a long way from 20TB/platter. To reach 20TB by 2020, the 500GB/platter drives will have to increase areal density 44 times in six years. It isn't going to happen. ... Rosenthal writes: "The technical difficulties of migrating from PMR to HAMR, meant that already in 2010 the Kryder rate had slowed significantly and was not expected to return to its trend in the near future. The floods reinforced this."
- S2CID 213769087. , citing Rosenthal, David (2016-12-13). "The Medium-Term Prospects for Long-Term Storage Systems". blog.dshr.org. Retrieved 2020-03-07.
- ^ "APS Fellow Archive". APS. Retrieved 17 September 2020.
- ^ Nyenhuis, John; Richard Dee, eds. (August 2000). "Kryder Receives IEEE Reynold B. Johnson Information Storage Award". IEEE Magnetics Society Newsletter. Archived from the original on 2008-09-28.
- ^ "2007 Public Service Medal". Pingat Bakti Masyarakat (PMB). Archived from the original on 2008-02-07.
External links
- Walter, Chip (2005). "Kryder's Law". Scientific American. 293 (2). MattsComputerTrends.com: 32–33. PMID 16053134. Archived from the originalon 2006-04-10.
- "Kryder's Law @ Scientific American". Seagate. Archived from the original on 2007-09-26.
- Kozierok, Charles M. (2001-04-17). "A Brief History of the Hard Disk Drive". Archived from the original on 2000-08-15.
- "Mark Kryder". Carnegie Mellon University. Archived from the original on 2005-08-10.