While we don't have the mechanism to do what you are asking to do, I recommend using array snapshot or clone capabilities on the mirror leg to perform this operation.  Please make sure that the devices have been mapped 1:1 to the volume provisioned from the array.  Follow normal best practices for fracturing a clone or creating a snap to ensure a clean application consistent copy.
Hi there, the idea is to suspend the synchronization of the distributed volume, have one site still in production and run some test's on the leg of the second site. After the testing has been completted the synchronization can be resumed and all data from the production site is mirrored to the second site.  As this can be done when using storage mirroring (e.g. SRDF or MiirrorView).  thx and kind regards Tom
can a distributed volume temporarly be split?