Exchange 2013, it's just starting after migration from 2010 to 2013.
Replay Queue length in specifed passive DBs which is healthy has been growing rapidly in business
hour, however Copy Queue length is ok.
And it's not decreasing them at all in business hour, I'm serching for the cause for that,
MBX server performance, Disk I/O or networok... need help.
Even if that's night time, it looks that specified DBs on one server it has long replay Queue length logs.