Database Software

Hello -

I have a Flash Recovery Area (FRA) that contains Merged incremantal Image copies of my database. I have my online redo logs mirrored on my DATA diskgroup, and also in the FRA? My question is as follows:

Is it a best practice to have the archive log files stored on the DATA diskgroup, or in the FRA? All changes from the arch logs get applied on a nightly basis to the image file copies (from the incremental level 1 merge copy). Therefore, in the event of a failure, I'll only need the arch logs that have accumulated since the last nightly incremental backup. All image copies are written out to tape on a nighly basis. I don't want the arch logs to start taking up two much space, so would only like to have two days worth on disk. What RMAN command would I run to automatically delete the arch logs that are older than 2 days old?

Thanks in advance!
Mike