Performance evaluation of multiple TCP connections in iSCSI

like FC, iSCSI needs only one network for both storage and data traffic. However, a response to a block-level request in Storage Area Networks (SANs) based on Fibre Channel iSCSI may encounter a greater delay compared to FC, de have been used extensively in the last decade while iSCSI is pending on network conditions and location of target. fast becoming a serious contender due to its reduced costs Current efforts to improve performance for TCP are and unified infrastructure. This work examines the perfor striping data across a set of parallel TCP connections bemance of iSCSI with multiple TCP connections. Multiple tween a sender and receiver. However, when mUltiple con TCP connections are often used to realize higher bandnections are used between the same source-target pairs, the width but there may be no fairness in how bandwidth is connections themselves interact/compete with each other distributed. We propose a mechanism to share congestion in non trivial ways. In order to achieve optimal throughput information across multiple flows in "Fair-TCP " for im it is imperative that we understand these interactions and proved performance. Our results show that Fair-TCP sig treat the connections accordingly; failing which could lead nificantly improves the performancefor 110 intensive work to increased congestion and reduced throughput. loads. In this work, we study the effects of using multiple TCP connections on iSCSI. Girish[6] shows that the aggregate iSCSI throughput increases with increase in num 1