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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Chapter 5. Extended Remote Copy 247
3. A channel extender usually does not support dynamic pathing and dynamic reconnect.
That is, an I/O issued to a device always uses the same port on the channel extenders,
and the I/O has to reconnect through the same port.
However, you should configure your channel extenders such that each device can be
accessed through both CE pairs. Should a CR pair fail, access to the devices would then
be retried on the other pair.
5.21 XRC management
XRC can be managed either through the set of z/OS (or OS/390) TSO commands, or the
application programming interface (API), or through the Remote Copy Management Facility
(RCMF) offering.
In this section we are going to give you a description of the TSO commands used to
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