July 2004
Intermediate to advanced
496 pages
16h 46m
English
book
IBM TotalStorage Enterprise Storage Server Implementing ESS Copy Services with IBM eServer zSeries
by Cathy Warrick, Paul Jenkin, Claus Schiefer, Jiri Spacek
Content preview from IBM TotalStorage Enterprise Storage Server Implementing ESS Copy Services with IBM eServer zSeries
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Appendix C. Migrating from RVA to ESS 369
C.2.3 Peer-to-Peer Remote Copy
The RAMAC Virtual Array supports Peer-to-Peer Remote Copy, but only to other RVA disk
subsystems. With PPRC, volumes are mirrored. The user identifies which volumes on the
primary system are paired to which volumes on the secondary system. PPRC does not allow
RVA to ESS mirroring in either direction.
SnapShot, Virtual Concurrent Copy, and PPRC function only on the disk subsystem contents.
Any updates buffered in processor memory are not included. It is up to the user to quiesce the
application to ensure that it has written the data to the disk subsystem in a manner that
copies are usable without performing restart activities such as the backout of inflight
transactions. ...
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