accounting to local and remote server

hi: I need to setup proxy for a realm, and sent accounting to remote radius server. but I want to keep a copy of accounting data at local radius server too. after searching the email list, I found strategy below: 1. create two detail file 2. use buffered-sql to write data to local sql server 3. use copy-acct-to-home-server to sent data to remote radius server is the above strategy correct? or there are better ways? thanks a lot for help!! Regards, tbskyd