So the jury is still out on dynamic memory and SBS 2011.
dynamic memory and Exchange or SQL:
“Great question. We’re working with these teams to have guidelines on configuring Dynamic Memory for these workloads.
SQL Server announced full support for Dynamic Memory (http://support.microsoft.com/kb/956893). We’ll start having blog posts about the initial guidelines in the blog posts pointed by above link and eventually publish a whitepaper around it. Important thing is to set Memory Buffer = 5% for SQL workloads.
Exchange Server is a little bit different. Mailbox Role in Exchange Server does not change its memory allocations on the fly. So Dynamic Memory will not provide many benefits for this role. Other roles of Exchange can run with Dynamic Memory without any special configuration.
Serdar Sutay [MSFT]
Program Manager, Hyper-V “
Bottom line in our unscientific testing… that SBS 2011 doesn’t budge.