Microsoft published several technical solution papers on how to design, test and verify Exchange 2010 solutions for a certain number of mailboxes for a few vendors. I’ll try to keep a list of tested solutions right here for your reference:
For validated storage solutions, please consult the Exchange Solution Reviewed Program (ESRP) website here (ESRP 3.x) or here for Exchange 2007 (ESRP 2.x).
| Sites | Mailboxes | Solution | Published |
| 1 | 16,000 | Solution based on IBM X3650 M3, XIV Storage System 2810 and Brocade ServerIron ADX 1008-1 Load Balancers | February 2011 |
| 2 | 9,000 | Virtualized solution based on Dell M610, Equalogic and F5 BIG-IP 3900 Load Balancers | February2011 |
| 1 | 500 | Virtualized solution based on on Dell T610, Windows Network Load Balancing | February 2011 |
| 2 | 20,000 | Virtualized solution running Hyper-V on Dell R910 Servers, EMC CLARiiON Storage, and Brocade Network Solutions | February 2011 |
| 3 | 32,400 | Virtuliazed solution running Hyper-V on Cisco Unified Compute System Blade Servers and EMC CLARiiON Storage | June 2011 |
