Customer added one HP-UX 11iV3 as an attachment to a CLARiiON CX3 series array. After that, server connectivity was not stable.
According to latest EMC Interoperability Support Matrices, updated HBA firmware and drivers had to be installed. In this case that resolved the problem.
When a customer wants to attach new server to EMC storage, please refer to latest Interoperability Support Matrices to verify the interoperability of the server environment. If the server environment does not meet EMC recommendations, an adjustment is required on the server side.
The location of the EMC Interoperability Support Matrices is: http://www.emc.com/products/interoperability/index.htm.