Top Contributors

DAG

We have a "standard" infrastructure and i have 2 CAS server and 2 mailoxes servers inside our principal site.
Those 2 mb servers are mounted with a DAG .

We have another external site to replicate it and that is suppose to be synchronised with our first site.

Last weekend, the mailbox server changed of mailboxes databases...(by itself)

Is there some of you with a similar setup ??
Rank: Sage

Expert Comment

This could happen if Exchange detects server hosts databases is offline or secondary server has better bandwidth or response than server is hosting databases.
0
Rank: Prodigy

Expert Comment

Simon Butler (Sembee)2014-11-19 03:44 AMID: 134606
This is a common configuration.
The main reasons I see for inter-site failover is lack of AD Sites and Services configuration and DAC mode not being enabled.

Simon.
0