Time Machine completed a verification of your backups

The link provided is pretty much verbatim what WD responded to me with having sent them a log file of the error. I would accept WD and NAS might be flaky if it had not been running perfectly for a number of years. Also I have no problem accessing my Photo library on the drive which also uses a sparse bundle or iTunes library.

Reading through various correspondence there seems to be an issue as to whether one should be using afp or SMB protocol that Apple are moving towards the latter - could this be at the root of the problem?

John

I now see what you are saying and have noted that Apple only support TimeMachine on NAS using SMB. Do you happen to know what iteration of the OS this was brought in on? As stated it has only been in the last couple of months that this issue with Time Machine has started occurring which suggests it was being supported over afp until quite recently, and even with the first iterations of Mojave.

I have been on to WD to alert them of the problem, although fairly stunned that none of them seemed to be aware as they could have avoided a whole lot of wasted time in trying to fix the problems I have been seeing. However until they come up with a work around I might revert to an earlier version of the OS so that I can continue to have a back up solution in the meantime.

Any information you can provide would be much appreciated.

Except it is not a one off but keeps happening. Never use to only just started doing it in the last couple of months and trying to pin down why it is now happening. I can go with the warning and it will do back ups for 3 or 4 times before the warning happens again which completely negates the point of the time machine back up. Been to WD to see if it is a problem with their latest firmware update. They have looked at it extensively and assured me it is not the problem. So is it something to do with 10.14.6?

Are you telling me that Apple manufacture a NAS? My understanding was that Apple had completely withdrawn from the hard drive market and therefore you have no choice but to go non Apple. IF Apple have withdrawn from the market but then develop software that doesn't work with third party drives where does that leave us and what is the point of TimeMachine?

As previously stated this is an issue which has only occurred in the last couple of months, before then I had no problems with using Time Machine with my NAS

Haven't needed to do an entire system restore thankfully however I have successfully restored files in the past so have no reason to suppose a full system retire would not have been possible.

The whole purpose of have a NAS drive is to have hard ware redundancy which a single drive hanging off my MacMini doesn't provide me. If this is Apple's official stance on how to back up critical data then its pretty shoddy.

Are they expecting everyone to use their Cloud service? Simply not the way everyone wants to go.

in spite of the negative response from John Galt there is a solution that has worked and I now have Time machine working perfectly with my WDMyCloudDL2100, as well as successfully storing my photos library on the drive in spite of other naysayers on alternative threads. The latter is achieved by creating a sparse image and the solution has now worked for 2 years without issues see (https://discussions.apple.com/thread/8030554?answerId=32793620022#32793620022).

However back to TimeMachine the issue I faced was indeed to do with the protocol and the fact that Apple no longer support AFP - thank you to JG for putting me on to this. The good news is that although MyCloud is set up to work with AFP you can change it to work with SMB. As ever before doing any of the following back up your computer first.

The first thing to do is to erase your current Time Machine set up on your WD device:

1. Ensure that the TimeMachineBackup" share is set to Public Access.

2. Log into the my Cloud Dashboard and Turn off the time Machine Backup Service.

3. Log into My Cloud Dashboard > Settings > Time Machine > Turn Off.

4. Go to the Shares Tab and Delete the “TimeMachineBackup” Share

5. Reboot the My Cloud

6. Follow steps to recreate the Time machine Backup Share.

7. Log into my Cloud Dashboard > Shares > create new Share: TimeMachineBackup > Set as Public Access on

 Perform a My Cloud System only Restore:

Having done this you now need to change how TimeMachine works with your WD Device. How to do that is shown here:

https://support-en.wd.com/app/answers/detail/a_id/21360/related/1

Having performed this operation you can:

8. Go to the Settings Tab > Time Machine Toggle On. 

And hey presto you should find that TimeMachine works over SMB fine and your back ups work as they are suppose too. It took quite a bit of interaction with WD to get to this stage, they had all the information but no-one seemed to be aware that my issues were to do with SMB, once I explained they pointed me straight to the right direction of how to fix it. Not sure why they could not do this as a Firmware update but there we go.

I hope this is helpful to others who might have encountered this issue and save you trolling the internet and WD for resolution.