Backup files keep getting smaller
Just purchased TI2014. On a Win XP Pro 32bit SP3 PC did a full backup of my C drive to an external 1TB drive. Reported TIB size is 45.9GB. That's probably reasonable as the total size of files on C is 58.5GB. Reran exactly the same backup and got a new TIB file with a size of 35.4GB. No errors reported.
I Did a similar backup for selected files from the D drive and got a TIB of 177GB. I repeated it a bit later without changing any files and got a TIB of 154.7.
What's going on? Why are the TIB files a different size when they're copying exacxtly the same thing and nothing has changed in the backup command? Are files getting missed? How can I tell if it's working properly?
I really don't want to find that the TIBs are unreliable and I can't recover should a main HDD crash.
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It wasn't a Disc and Partition backup.
I connected a brand new Seagate 1TB USB3 NTFS external hard drive. In a virgin, newly-installed TI14 I selected File Backup, expanded My Computer, ticked the C drive box (which automatically ticked everything on that drive & My Documents), changed the backup scheme to Full, turned the Schedule off and then hit Back up now. At the end I hot-swapped the USB3 drive with another identical drive and repeated the same backup. I didn't create a new backup instruction. I repeated the whole sequence for the D drive. There is no page file and the drives aren't indexed - I turned those things off ages ago. There's no shadowing. The PC wasn't connect to the internet and so obviously email wasn't running. McAfee would have been sitting in the background but presumably with absolutely nothing to do.
Given that there was no reboot and no other activity on the PC I am somewhat surprised that the TIB files are so radically different in size and especially that the later files are significantly smaller than the first-run ones.
I'm not feeling particularly confident with the validity of these backup sets without a good solid explanation for the anomaly.
There's no point spending hours doing backups and then finding loads of the stuff you think is safe has gone down a black hole!
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