September 2002
Intermediate to advanced
332 pages
11h 1m
English
Content preview from IBM eServer zSeries 900 Technical Guide
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Chapter 5. Sysplex functions 197
5.5.3 Dynamic Channel Path Management
There is no such thing as a “typical” workload. The requirements for processor capacity, I/O
capacity, and other resources vary throughout the day, week, month, and year.
Dynamic Channel Path Management (DCM) provides the ability to have the system
automatically manage the number of paths available to disk subsystems. By making
additional paths available where they are needed, the effectiveness of your installed channels
is increased, and the number of channels required to deliver a given level of service is
potentially reduced.
DCM also provides availability benefits by attempting to ensure that the paths it adds to a
control unit have as few points of failure in comm
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