EDIT 8/6/2008: Please see this post for additional information related to Hub throughput and different message sizes.
Large message size: effect of transport database cache size on throughput.
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Updated Jul 01, 2019
Version 2.0
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Hi Derek
It's linked in the doc, New maximum database cache size guidance for Exchange 2007 Hub Transport Server role : http://msexchangeteam.com/archive/2008/05/14/448890.aspx
Elias
It's linked in the doc, New maximum database cache size guidance for Exchange 2007 Hub Transport Server role : http://msexchangeteam.com/archive/2008/05/14/448890.aspx
Elias