VTL and the KISS principle

We are in the process of adding a COPAN VTL to our backup environment. It consists of two FalconStor landing areas with about 13 TB each. Behind them are two COPAN MAID SIR disk trays with about 60 TB each. Each VTL should have about 500 MB/s throughput from the SAN. Unfortunately, we are seeing about 400 MB/s on one and 300 MB/s on the other. As of yet, we do not know why we are not seeing the full performance. Currently, all but one of the six servers are running 2 GB fiber channel. The faster VTL has the one server running 4 GB fiber channel. Each server has an port on the HBA dedicated to the traffic going to the VTL. The obvious thing to try is to convert all those ports to 4 GB fiber channel.


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