Microsoft® Exchange Server 2010 running on the new DellTM PowerEdgeTM R720xd rack server provides a flexible and scalable messaging platform supporting up to 130 percent more Exchange 2010 mailboxes than the comparable solution based on the previous generation PowerEdge R510. A densely integrated server and storage building block, the R720xd is ideal for building power-efficient and balanced solutions for Exchange messaging workloads.

The R720xd’s internal storage options provide a level of density that previously required a standalone server and external Direct Attached Storage (DAS). The R720xd can eliminate the need for DAS, which in turn can save valuable rack space and lower power, cooling, and associated costs.

This technical white paper compares the performance of an Exchange 2010 solution on the R720xd with a Dell PowerEdge RAID Controller (PERC) H710P and the PowerEdge R510 (R510) with a PERC H700, and then presents a sample reference configuration for up to 7,500 users with a heavy I/O (~150 messages/day/mailbox) profile. Based on the results, the R720xd provides a significantly better building block for various Exchange solutions than the previous generation PowerEdge R510 with PERC H700.

Until the launch of the R720xd, the PowerEdge R510 server was the densest Dell rack-based server using internal storage. The R510 can leverage up to 12 x 3.5” internal drives, while the R720xd can scale to 24 x 2.5” internal drives. Using the Microsoft Jetstress 2010 (Jetstress) to simulate Exchange I/O workload, the R720xd showed approximately 2.5 times the number of Input / Output Operations Per Second (IOPS) achieved for RAID-1 and RAID-10 configurations and approximately twice as many IOPS achieved for RAID-0 configuration. As a result the R720xd can support up to 2.3 times the number of mailboxes per server, as compared to the R510. This performance improvement confirms the R720xd as a premiere storage-dense server building block for Exchange solutions.