Exch2013 causes packet loss in SAN connection

Cristian Ruiz 191 Reputation points

We have a customer that has 2 x VMs running Exchange Server 2013 with a DAG configuration. The database mailboxes files are stored in a LUN of a SAN storage (a HP MSA 2040). Each mailbox role servers are connected a a dedicated LUN. The issue is that when the VMs are running the physical node loss packets to the SAN storage. For example, if we do a ping -t command to the storage from physical node servers, with VMs running we are having packet loss, and with VMs stopped there is not packet loss.
In LUNs we have only database and logs files, the application files are in the system drive that is not in a LUN, there are in an internal disk of the server.
Does anyone knows what can be the reason of this behaviour? Or what would be the first step in order to investigate?

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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