I have upgraded my ATI 9.1(3832) and i'm still getting this error. The backup never starts, just sits there then gives the following error Failed to write data to the archive file. A possible reason might be poor media quality. : None Failed to write data to the archive file. A possible reason might be poor media quality. : None: User replied: oK Operation with partition "D:" was terminated. Details: Write error (0x70004) Tag = 0x0 Error writing the file. (0x40003) function = "WriteFileNoCache" Tag = 0x7CEB2CDC9FB1212B The semaphore timeout period has expired. (0xFFF0) code = FFFFFFFF80070079 Tag = 0xBD28FDBD64EDB816 I can uninstall acronis and install it to another W2k3 server in the same rack and it works without a hitch. Move it back to the W2k3 server and it errors out. I can run a MS backup on this machine to the NAS without error. This server is running exchange so if there were any connection issues I'd hear about it. The NAS is also used by multiple machines so i'm sure there are no connectivity issues there. I have seen that there are a few threads like this on the boards but no resolutions. Has anyone gotten this to work?