I did some Web research on data corruption that is relevant to this discussion. Please see https://www.wilderssecurity.com/showpost.php?p=1246498&postcount=74 and https://www.wilderssecurity.com/showpost.php?p=1248200&postcount=80. This first link lists some free programs you can use to add redundancy to your backup files. If you use one of these programs, you'll need to make sure it is available from an alternate operating system installation, such as a BartPE CD. These programs can cure corrupted files, and may be a good investment for those of you with a lot of corruption problems. If you use one of these programs, be sure the backup verifies successfully before creating the redundant file(s). I realize that this may not be possible in some cases, given the nature of some of the posts I've seen. However, these programs can protect you if the corruption occurs at a time later than after the redundant files are created. I'd recommend creating the backup on the device which works successfully most often for you, then do a validate, and if successfully validated then create the redundant information with one of the programs mentioned in the first link above, and then copy or move the backup files and redundant information files to the final destination. If reading from the final destination is a flaky operation, then you may wish to copy the backup files and redundant information files back to the most reliable device before doing a restore. If corruption is found during a restore, then you'll need to run one of the programs mentioned to make the necessary corrections to the backup files, and then try the restore again.