I’ve been playing with Cloud Migrator 365 in a lab to migrate mailboxes from Domino 8.5.3 to Exchange 2013 CU1.
I use the term runaway for want of a more accurate technical description.
I’ve seen transaction logging runaway a few times over the past few years, most recently just this weekend.
The initial symptoms that alert you to this issue vary, databases are offline, transaction log volumes are full, transaction logging is out of control or mailboxes are full of NDR’s, but by and large the issue is the same.
In my recent customers case transaction log disk space was being consumed at upwards of 1Mbyte per second, and a 30GByte log volume that should last a week is filling up in just over 8 hours, between backups, and databases are being dismounted.
The most recent case is on Exchange 2003, but I’ve also seen it with Exchange 2007 and Exchange 2010.
As of April 2nd, Exchange 2013 Cumulative Update 1 means that it can now coexist with the two most recent earlier version of Exchange, Exchange 2007 SP3 RU10 and Exchange 2010 SP3.
We upgraded/migrated/transitioned to Exchange 2013 in January, and went thru some pain due to the lack of coexistence.
I’m looking forward to evaluating the mixed 2007/2010 features and getting a grip of what works, and what the casualties may be.
One feature in particular of interest is the 2007 Transporter Suite, used to move mailboxes from Domino. It will be interesting to see this work in coexistence.