Have got a problem with shared LUN
both nodes are PowerEdge R420 dell servers
storage: PowerVault MD3820f
nodes are connected via FC
after validation I have got this:
Physical disk 45afe2ad is visible from only one node and will not be tested. Validation requires that the disk be visible from at least two nodes. The disk is reported as visible at node: node1.domain.com
Physical disk 45afe2ad is visible from only one node and will not be tested. Validation requires that the disk be visible from at least two nodes. The disk is reported as visible at node: node2.domain.com
No disks were found on which to perform cluster validation tests.
It is strange, but test show that node1 and node2 can see the LUN but does not consider it as shared volume candidate
thank for everyone for an answer