Yes. VMFS signature contains SAN vendor ID and LUN ID, and all the host that see same SAN and same LUN ID will be able to use it instantly.
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MCSA, MCTS, VCP, VMware vExpert '2009
http://blog.vadmin.ru
EMCCAe, HPE ASE, MCITP: SA+VA, VCP 3/4/5, VMware vExpert XO (14 stars)
VMUG Russia Leader
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