McKown, John wrote:
Getting the 'star' treatment is the all new 3390 Model A introduced in
z/os 10. This is a logical DASD volume with a slight increase in the
architectural limit of 65,520 cylinders to 268,434,453
cylinders. Gulp.
Did he say 268 mega cylinders? Yup.
Nah, call it the 3390EL for "Excessively Large". I cannot imagine
backing that monster up. But, then, compared to my PC's 500 Gb drive???
500 GB is nothing compared to the architectural limit for EAV. We're
talking about over two hundred terabytes per volume!
Fortunately, IBM has taken a sensible approach and merely quadrupled the
maximum volume size for the first generation of EAV over the existing
54GB per volume limit for shark/ESS.
Once the performance issues are identified and dealt with, much larger
individual volume sizes should be possible. We could be looking
terabyte-sized volumes within just a few years!
--
Edward E Jaffe
Phoenix Software International, Inc
5200 W Century Blvd, Suite 800
Los Angeles, CA 90045
310-338-0400 x318
[EMAIL PROTECTED]
http://www.phoenixsoftware.com/
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