We have been using TeamCity with the internal database for some time now and encountered no problems. It has successfully handled with running out of disc space and RAID failures without any problems. We are about to move out TeamCity server to a new machine and wondered what other experience other people have had using external databases. Our database of choice would by MySQL but unless there is a speed/performance advantage we are likely to continue using the internal database as this has proved to be robust.
Lead Game Systems.
Travellers Tales Ltd.