Time Machine is just plain terrible. I've been struggling with an error saying it can't delete the backup and then it fails. This has been going on for months. So, I dug into this and found out how to delete the backup, which I did, and which took forever. Then it took 2 DAYS doing a fresh backup, which worked. And lots of subsequent backups have worked over the past week. But now TM tells me all backups were verified, and it has to start a new backup, then I get this stupid error message again, and it dies.
I use a WD MyCloud NAS and it has NO problems. This is a TM problem. I am sick and tired of this stupid tool. I backup my Win10 system to the same NAS and it takes 18 minutes and I've NEVER had a problem with it. I backup my iPhone to iCloud, not the NAS, and it takes about a minute. Why the heck does TM take so long to backup, and then is so darn unreliable on top of that???
Apple should be ashamed to ship an app like this. Doggone, this is maddening.