I'm new to linux but have been running SME Server since 5.0 and have loved it. I recently had a bad power connector drop power to my harddrive while the server was running and corrupted a critical file. The corruption was in such a way that running Anaconda again did not recognize the the existing 7.0.8 installation and only offered the clean install option. Since my Ibays were full of unbacked-up files, I decided to upgrade my harddrive and try to copy the Ibays from the old drive to the new drive. After installing SME on the new drive and recreating the same Ibays, users, and group, I was able to use a Linspire 5.0 Live CD to boot the machine and copy the old files to the new Ibays. Since I created the same users and groups with the same passwords as on the old drive, all the permissions were recognized by the copied files and folders so I was back in business as if nothing ever happened.
I hope this helps someone with a similar situation. SME Server rules!
DWH