Does VMAX/TimeFinder/Clone MF support STK SnapshotCopy command?

Yes, please see page 25 in the TimeFinder/Clone Mainframe Snap facility product guide.

http://powerlink.emc.com/km/live1/en_US/Offering_Technical/Technical_Documentation/300-010-180_a02.pdf?mtcs=ZXZlbnRUeXBlPUttQ2xpY2tDb250ZW50RXZlbnQsZG9jdW1lbnRJZD0wOTAxNDA2NjgwNGYyN2JmLG5hdmVOb2RlPVNvZndhcmVEb3dubG9hZHMtMQ__

I have also attachd the Product Guide to this reply.

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