Question Back up issues i have several back-up drives

If only a single drive is doing that, it may be failing on writes, getting it partially done, then starting over...

Check CrystalDiskInfo on drive health....? (Perhaps at least a short test within GSmartControl?)
Everything came back good drives healthy i tried deleting the partion again and restaring the drive and redoing backups this time it double them again and all the same size now the drives almost full and of the exact same back up