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Component: Volume Manager 
The volpagemod_max_memsz is a VxVM tunable that is used to specify the amount of memory, measured in kilobytes, required for caching FastResync and cache object metadata. This tunable has a default value of 6144KB (6MB) of physical memory. The valid range for this tunable is from 0 to 50% of physical memory. Setting the value of volpagemod_max_memsz below 512KB fails if cache objects or volumes that have been prepared for instant snapshot operations are present on the system. If you do not use the FastResync or DRL features that are implemented using a version 20 DCO volume, the value of volpagemod_max_memsz can be set to 0. For more information on using this tunable, refer to Performance Tuning and Monitoring in the Veritas Volume Manager Administrator's Guide.


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