Faculty of Engineering and Natural Sciences
A New World Record in Areal Recording Density for Digital Tape Recording Systems
IBM Zurich Research Laboratory
The volume of digital data being produced is growing at an ever increasing pace. According to a recent International Data Corporation study, 281 exabytes of data were created in 2007. In the future, this staggering volume of data is projected to grow at an almost 60% compound annual growth rate, faster than the expected growth rate of storage capacity. Moreover,
new regulatory legislation requires that a larger fraction of this data be preserved. These facts indicate an unprecedented need for cost-effective backup-and-restore and digital archiving technologies.
Tape storage has a close-to-60-years history and is today one the main technologies for backup-and-restore applications and the technology of choice for archival applications. Market needs, as indicated, put an unprecedented pressure in pushing the limits of this technology further. State-of-the-art linear tape products found on the market achieve an areal storage density of about 1 Gbit/in2 and a cartridge capacity on the order of one to two terabytes, while tape product roadmaps promise areal recording densities of about 20 Gbit/in2 in 2018. Are such recording densities technically possible?
To answer this question, a technology demonstration showing an areal density of 29.5 Gbit/in2 using a new barium-ferrite magnetic medium was recently achieved jointly by IBM and Fujifilm. This talk will address the various breakthroughs in tape media, tape path, servo format, servo control, data detection and signal processing that made this new areal
density record possible.
Sedat Olcer received a Diploma of electrical engineering and a PhD degree from the Swiss Federal Institute of Technology, Lausanne (EPFL), Switzerland. From 1982 to 1984, he was a research associate at the Information Systems Laboratory of the Stanford University, Stanford, CA, and at Yale University, New Haven, CT. In 1984, he joined the IBM Zurich Research Laboratory, Rueschlikon, Switzerland, where he has been working on digital transmission techniques for magnetic recording channels, and high-speed data communications for local area networking and network access. His research interests are in digital communications, signal processing and coding, with applications to broadband network access and storage systems. He was named an IEEE Fellow in Nov. 2005.
November 3, 2010, 13:40, FENS L027