Thanks for the answer. Yes, i perform a rescan on storage/storage adapters. Also i've already tried to do the tips described in this KB article. They did not help. I also tried to remove this LUN from AMS Host Groups, then rescan storages/adapters in esxi. After rescan datastore and device disappeared from lists. After that i remove from Inventory all VM whith unknown status on every ESXi hots and perform Restart Management Agent on all esxi hosts. Then add LUN to Host Groups, rescan storage/storage adapters and datastore appeared, but stll inactive with same error.
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