Hello. I am currently doing a mailbox migration from Exchange 2007 to Exchange 2013. I have 4 databases in Exchange 2013 which are A, B, C and D (each with different quotas). The databases have their copies on another Exchange server under DAG.
During the migration, database D suddenly keeps on activating its copies on different servers every 5 minutes (or so). In the first minute, it was active on server 1. After awhile, it activates on server 2. Then back on server 1. This repeats itself until now.
This only happens with database D. Migration to database D keeps failing because it cannot find the target database (due to it keep switching). Stopping and resuming is useless because it will fail again. Migration to databases A, B and C works fine.
Does anyone have any idea what's going on?
