Carbon Copy Cloner not backing up to a Drobo 5N

Sometimes, it seems that OSX migrated to SMB for connection to drobo’s. Unfortunately, this won’t work since a Sparse Bundle is not support over a SMB Connection. Use, this process to solve the issue:

Sparsebundle disk images are not supported on some filesystems

CCC will refuse to save or mount a sparse bundle disk image if the underlying filesystem that the disk image file resides upon does not support the F_FULLFSYNC file control. Most filesystems support this file control, but the SMB file sharing protocol does not. Most people that encounter issues with creating a sparsebundle disk image on a network volume are encountering issues because the network volume is mounted via SMB.

Starting in Mavericks, Apple’s preferred file sharing service is SMB. As a result, if you attempt to connect to a sharepoint, Finder will use SMB to establish that connection unless you explicitly specify AFP as the protocol to use. In this configuration, a sparse bundle disk image will not work, and CCC will issue an error. To avoid this error, connect to the sharepoint explicitly using AFP:

Eject the network volume if it is currently mounted
Choose “Connect to server” from the Finder’s Go menu
Type in “afp://yourserver.local” (changing the hostname, of course), then click the Connect button and mount the sharepoint
Go back to CCC and choose “Choose disk image” from the Destination selector, then select the sparsebundle disk image on your network volume