Questions about logging on the NXXXX series

Hi, 

I have a couple of questions regarding the logging on our N2000, N1500, and N1100 series switches. 

1. How do I exclude certain events from being written to the log? 
We have a couple of events that is filling up the logs repetadly, that we achknowledge and is not a problem. 
It is two seperate INFO events. I do not want to exclude all INFO events, but just those two. Is this possible?

2. Now we only have about 24 hours of data logged on the switch. How can I extend this without sacrificing performance?