OpenFlow SDN testbed for Storage Area Network

The paper describes the testbed to determine the effectiveness of an approach to build network storage using Software-Defined networks (SDN) OpenFlow. It is assumed that main protocol to SAN is iSCSI over local area network. Prototyping tools for managing network resources and data flows on the basis of SDN and testing environments based on Free and Open Source software. We describe experiments with various modifications of OpenFlow controller NOX and set out the specifics for the use of various software and hardware OpenFlow switches. The main tests goals are Data Center SAN specific: implementation of QoS methods accordingly switch specifics, topology changing, measuring of transmission parameters, simulating of large amount of requesting hosts (up to 100 thousands hosts).