Customer wants to track who deleted files.

I was able to get auditing working, but the log file rolls over every 5 minutes, so the customer can’t find out who deleted something yesterday if they check it more than 5 minutes later.

How can I increase to security log more than 512K? Used to be able to on VNX, but can you on Unity?
Can the files be rolled over to an archive? The options don't seem to be there in the event log properties.

Also event id 538 (logon/logoff) is taking up most of the security log file. Can we not audit those events to save space?

512KB seems pretty useless to me - What were they thinking?