Igor Sverkos posted a topic in Retrospect 9 or higher for MacintoshHi, we are interested in Retrospect. But I don't know if Retrospect is the right application. What we need: 6am: Full backup is created. 7am: User created a new 10GB file "foo.mp4" in /currentWork. 9am: Backup will run. It will backup "/currentWork/foo.mp4" for the first time. 10am: User will rename "foo.mp4" to "bar.mp4". 11am: Backup will run again. What will happen now? Will Retrospect copy the "bar.mp4" again or will Retrospect recognize, that it has already backed up the file and it was just renamed? 12am: User will move /currentWork/bar.mp4 to its final destination /projects/clientsX/bar.mp4. 13am: Backup will run again. What will happen now? Will Retrospect copy /projects/clientsX/bar.mp4 or will it recognize, that it has already backed up the file? So the final question is, if I will end up with 20GB wasted space or if only 10GB will be used in the backup media. If deduplication will work as expected (only 10GB will be used), will a new full backup add the 10 GB files again or not? What will happen, if I copy the file over via network to another system, which will also be backed up by Retrospect (the two systems are using the same backup set)? Does it recognized, that the file is already in the the set or will Retrospect add a new copy... Last thing - Virtual Machines: For example we have the folder /vms which contains our VMs So there are many large files (the virtual disks). When you just boot one VM, the file will change. What will happen? Will Retrospect treats that modified file as a new file, so it will copy the entire file or only the changed blocks? Many questions, I hope someone is able to answer. Thanks.