Steve Jones - SSC Editor (12/6/2010)
Mirroring doesn't affect the log, with the exception that the log is needed to send the data to the mirror database.
unless mirroring gets suspended, then log grows because log records can't be discarded.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability