Microsoft Exchange Client Access Server OAB Download counters

The following table shows Client Access server offline address book (OAB) download counters.

Counter Name	Description
MSExchangeFDS:OAB(*)\Download Task Queued
MSExchangeFDS:OAB(*)\Download Tasks Completed	Shows the number of OAB download tasks completed since the File Distribution service started. The default value is every 480 minutes or 8 hours.