Backup task was unable to run due to errors found at the backup destination. The index structure was found broken in the latest integrity check. There may be broken files which were not detected this time. If you have further questions, please contact Synology support.
①．8/8 4:00 SYSTEM [Local][NAS-Backup] Backup task started. ②．8/8 5:00 SYSTEM [Local][NAS-Backup] Backup integrity check has started. ③．8/8 5:15 SYSTEM [Local][NAS-Backup] Data integrity check finished. 82.4 GB data checked this time, accounting for 19.4% of the total data (423.6 GB data in total, 100.0% checked already). ④．8/8 5:46 SYSTEM [Local][NAS-Backup] Backup integrity check is finished. The backup target is found broken. (The data stored in backup destination [usbshare1] was corrupted. Please contact Synology Technical Support.)