We have an increasing number of ActiveSync devices connecting to our Exchange 2010 infrastructure (one primary mailbox server with about 920 accounts and counting; plus a cas/hub in the primary site). Solarwinds has been frequently throwing "Component: Information Store: I/O Database Writes Average Latency" alerts. I ran the troubleshooting scripts (Troubleshoot-CI.ps1; Troubleshoot-DatabaseLatency.ps1; Troubleshoot-DatabaseSpace.ps1) and all came back as a pass/good.
Has anyone seen a correlation between increasing ActiveSync devices and database write latency? If so, how did you resolve it?