Everend

yea, that page and http://support.code42.com/CrashPlan/Latest/Configuring/Replacing_A_Device_With_A_Different_Operating_System_Or_File_System seem to be the most relevant. The main thing I don't know yet is if it will let the new unRAID computer adopt both of the others without needing to upload it all. I see this note on the page you linked that makes me question it. "Information On Your New Computer - ?Any information backed up from your new computer before adopting must be backed up again after adoption. Before adopting the previous computer, make sure your new computer has all the information you need."

I've been using Crashplan for years from two computers. Last night I converted one of the computers to unRAID! - It was really simple setup, thanks for making it painless. The computer that became unRAID had 1.5TB of data on it, backed up through Crashplan. The other computer has 3.5TB that I've just started transferring to unRAID. Once all the data has been copied to unRAID I'll install crashplan to keep it backed up. I'm trying to figure out the correct procedure for doing this without needing to upload 5TB since CP already has it all. I think the answer is to adopt the old computer (1.5TB) and then to adopt the other computer (3.5TB) both by the new unRAID system. Any thoughts, suggestions, advise? thanks Everend