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DAG log file truncation behaviour
Is anyone able to point to anything from Microsoft that describes the log file truncation process? I'm looking to confirm that if we configure an Exchange node that contains only passive DB's and per...
Yes it will. If you have an Exchange aware backup then backing up only a passive database is supported and works. Once the backup is complete and the current logs saved to backup the logs are truncated and this information is replicated across the DAG over RPC.
I had a client many years ago that blocked RPC across the inter-DAG network and truncation did not happen. Within seconds of fixing the network firewall TB of logs files got cleaned up on numerous servers across the world.
Hi. Dan Snape
If DAG is configured, it is recommended to back up all members when introducing an image backup solution.
Therefore, if you are a member whose backup is not proceeding, the transaction log file will not be replicated.