Ross in an early E2K7 presentation I saw they stated there would be up to 50 Storage Groups (not Mail Stores). If I misheard this then I am now worried. With a lot of 3rd party backup and recovery tools the Storage Group is the unit of granularity (due to Trans Logs) not the Mail Store. For example a popular SAN appliance uses the Storage Group for its "instant" recovery target so all stores are affected. This is not the only such tool that emphasized Storage Groups. In otherwords 50 mail stores does me no good if I have to affect some significant number of them to recover.
Can you please correct me or the following website info?
http://www.microsoft.com/technet/prodtechnol/exchange/E2k7Help/0c8ba54e-ea55-49da-be0a-f1c5d4a216fb.mspx?mfr=true
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• Performance improvements Exchange 2007 supports deployment on a 64-bit architecture for improved performance and capacity. Because of the move from a 32-bit architecture to a 64-bit architecture, the Enterprise Edition of Exchange Server 2007 now supports a larger number of storage groups and databases per server. Exchange Server 2007 lets you create as many as 50 storage groups per server. Although a storage group can contain as many as 5 databases, there is a limit of 50 databases per server
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