where to get info for medium size sites?

Hi there, I have a internet community running which is getting pretty popular. The problem is, that my knowledge ends at certain points and I cant find any info on the net on that. For example what to do with all the apache logdata (200MB each day). The stats tool I am using (sawmill 6.4.x) takes about 3 hours to update logdata each saturday. How to find a proper backup solution for all the new member data. etc. Does anybody know some good links on that topic? Where can I get more info on operating such middle scale sites? Booktitles are aprechiated as well. Thank you for any help, Merlin