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DS8800 Performance Monitoring and Tuning
book

DS8800 Performance Monitoring and Tuning

by Gero Schmidt, Bertrand Dufrasne, Jana Jamsek, Peter Kimmel, Hiroaki Matsuno, Flavio Morais, Lindsay Oxenham, Antonio Rainero, Denis Senin
July 2012
Intermediate to advanced content levelIntermediate to advanced
726 pages
26h 28m
English
IBM Redbooks
Content preview from DS8800 Performance Monitoring and Tuning
596 DS8800 Performance Monitoring and Tuning
Creating more than one FlashCopy SE relationship for a source volume increases the
overhead, because each first change to a source volume track must be copied several times
for each FlashCopy SE relationship. Therefore, keep the number of concurrent FlashCopy SE
relationships to a minimum, or test how many relationships you can have without affecting
your application performance much. From a performance standpoint, avoiding multiple
relationships also applies to normal FlashCopy.
There are no restrictions on the amount of virtual space or the number of SE volumes that
can be defined for either z/OS ...
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Publisher Resources

ISBN: 0738436836Purchase book