vRangerPro fails backup with error message: API Call failed with message: File <unspecified filename> is larger than the maximum size supported by datastore '<unspecified datastore>'
vmdk filesize exceeds the maximum filesize for the datastore
The error is occurring when a snapshot is being made. If the vmdk filesize exceeds the maximum filesize for the datastore, ESX will be unable to create a snapshot.
For VMFS versions prior to 5.0
1 MB block size = 256 GB maximum filesize
2 MB block size = 512 GB maximum filesize
4 MB block size = 1024 GB maximum filesize
8 MB block size = 2048 GB maximum filesize
For all block sizes for VMFS versions of 5.0 or greater
2048 GB maximum file size
Currently there is no workaround other than create a new datastore with a new blocksize that can support the filesize of the vmdk or move the VM to a datastore formatted with a larger block size.