replied on March 31, 2016
Hi Sheila,
Take a backup before you do anything. Upgrading is relatively simple. Download LF 10 and run the server setup.exe and click next>accept>next>finish. Couldn't be simpler. Nothing in SQL is changed so no need for concern there. Repository will require a re-index as part of the upgrade but again this is wizard based and very straight forward. In a nut shell, stick to the defaults provided as part of the setup and you can't go far wrong. 
Worst case scenario, you have a backup. Just restore.