I just noticed that HP has released some recommended configurations which might interest those planning for Exchange 2010…
With the release of Microsoft® Exchange Server 2010, there are many new design features and configuration options to consider. To better understand how to deploy theses new features with HP servers and storage, HP has developed a series of recommended configurations. The recommended configurations provide sizing guidance and deployment options to support the new Exchange 2010 solutions. The configurations are meant to assist you in designing solutions that address your email business requirements.
The recommended configurations provide several design options following HP’s tiered solutions matrix for Microsoft Exchange 2010. The tiered solution matrix provides recommended configurations that have been designed to support various service levels requirements. The service level requirements range from supporting basic mailbox services to deploying highly available solutions.
ProLiant BL460c G6 supporting 4000 2GB mailboxes (includes MDS600, EVA4400)
ProLiant DL370 G6 supporting 1000 2GB mailboxes (internal storage)
ProLiant DL180 G6 supporting 100 2GB mailboxes (internal storage)