These services are used by System Restore to create system restore points and by Windows Backup or other software to make images of the Windows partition while it is in operation. They are very useful in this way and I don't see why you should disable them (even if you don't use them, they may be useful for other things too). Also, because they are related to each other, I don't find it a good idea to have other of them enabled and other disabled, perhaps this is the cause of the errors you get. Disable Windows Backup if you want but not the other two.
This is absolutely normal, just ignore it.