Posted by Is taking a backup of an active transaction directory the best way to go?
Ideally it is not required. Instead, we can use the mirror log path, which is detailed below.
If we set the value of the mirrorlogpath configuration parameter, the Db2 database system creates active log files in both the log path and the mirror log path. All log data is written to both paths. The mirror log path has a duplicate set of active log files, such that if there is a disk error or human error that corrupts active log files on one of the paths, the database can still function.
DayDreamsDatabases 