Recently I ran Disk Utility and found my SSD was corrupt and needed to be repaired. I tried to run the repair utility and found that the disk couldn't be fixed and had to be restored with a backup. No big deal, I've got Time Machine. I booted into the recovery HD and ran the Time Machine backup. The progress bar will reach ~40% and then I get a message saying the backup failed and to restart my computer. This has happened every time I've tried it. Is there anything I can fix that would be causing the backup to fail? All help is appreciated.