My Daily backups were failing and event viewer was showing the following error:
“The backup operation that started at ‘?2016?-?05?-?30T02:00:25.974941500Z’ has failed with following error code ‘0x800700EA’ (More data is available.). Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.”
Windows backup is essentially a shadow copy. Each disk attached has a maximum shadow copy storage limit. Normal behaviour should be that the oldest backup is removed when disk space is low but If the backup is large it seems to throw this error.
We need to resize the shadow storage using the following command. Once done, the errors stopped.
vssadmin resize shadowstorage /for=B: /on=B: /maxsize=499GB