Dear All,

We are in the process of migration from exchange server 2010 to 2013,we will start moving mailboxes to exchange 2013 database,i remember last time when i did a migration from exchange server 2003 to 2007,there was  enormous transactions logs file generated on the exchange server 2007 which caused the logs file volume to filled up and all the storage group went down.it was a mess i still remember.

i don't want to repeat the same mistake again,and land up in that creepy situation again,can anyone tell me how is the design now with exchange 201 and 2013,does logs files gets created even in 2010 to 2013 migration? if yes then what amount of logs files generation can i expect? and what would be best practice please advice and suggest.

Thanking you in advance 

Regards

Abu.

Yes, it still generates the transaction logs on destination server log folder when you move the mailboxes... It usually generates the logs to the size equivalent to the size of the mailboxes that you are moving so for example if you are moving 5GB mailbox, it would generate about the same (+ minor variable) amount of transaction log as per theory. You can configure circular logging on the destination databases, also if you have DAG / Database copies then look for below article to find more about Circular logging + DB copies...

http://blogs.technet.com/b/scottschnoll/archive/2011/06/27/circular-logging-and-mailbox-database-copies.aspx

Dear Amit,

thanks for the valuable response,in this case if i run a daily full backup on my exchange server will the logs get cleared.

Yes, if you run full backup, it will clear the logs based on certain criteria like all logs are copied and replayed to other database copies, inspected on lagged copies etc... For various condition checks, refer : https://technet.microsoft.com/en-us/library/Dd876874(v=EXCHG.150).aspx