This counter tallies the total kilobytes read by clients from the client side, whether served via cache or fetched remotely, through the CIFS AO since it was started, with discontinuities marked by cwoAoStatsLastResetTime. An administrator can use it to measure overall read volume for file-share traffic being optimized by the CIFS AO, regardless of whether each read was a cache hit or a remote fetch. For example, tracking this counter over a workday would show total file-read demand from branch users accessing shared drives over CIFS.