There has been as cascade of articles on jazz.net now CLM 2012 is shipping. I found the following very useful:
https://jazz.net/library/article/823#2 – this is all about clustering but I really like this section on performance tuning a server.
https://jazz.net/library/article/832 – general deployment guide that includes a handy table for client/server compatibility
https://jazz.net/library/article/984 – how Jazz SCM compresses files – including links to a report to can use to check your storage usage.
Next stop is for me to read the stuff on using RTC with XCode on the Mac (https://jazz.net/library/article/979)
Actually – just start at the top of the article list and start reading…