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Event ID: 191 Source: ESE97

MSExchangeIS (413) System parameter perfered version pages was changed from 3552 to 3261 due to physical memory limitation.
From a newsgroup post: "This is just an informational message (despite it being marked as a "Warning"). The IS expected to find enough memory to create 3552 Buffers but found only enough to create 3261. It's nothing to worry about since the number of buffers can expand or contract based on the memory available."
From another post, made by a Microsoft employee: "The event id 191 is just an informational message informing you these dynamic bufferings of ESE97. We are working on making this message shown only when diagnostic logging is enabled.  This is only an informational message and  should not be cause for any alarm at all."

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