08-01-2018, 10:32 AM
ISCSI is proposed as a possible solution to building future storage systems. However, using iSCSI raises numerous questions about its implications on system performance. This lack of understanding of system I/O behavior in modern and future systems inhibits providing solutions at the architectural and system levels. Our main goals in this work are to understand the behavior of the application server (iSCSI initiator), to evaluate the overhead introduced by iSCSI compared to systems with directly attached storage, and to provide insight about how future storage systems may be improved. We examine these questions in the context of commodity iSCSI systems that can benefit most from using iSCSI. We use commodity PCs with several disks as storage nodes and a Gigabit Ethernet network as the storage network. On the application server side we use a broad range of benchmarks and applications to evaluate the impact of iSCSI on application and server performance. Our analysis reveals how iSCSI affects application performance and shows that building next generation, network-based I/O architectures, requires optimizing I/O latency, reducing network and buffer cache related processing in the host CPU, and increasing the sheer network bandwidth to account for consolidation of different types of traffic. ISCSI is the block-level storage protocol that lets
users create a separate storage network using Ethernet. This protocol uses Ethernet as a transport for data from servers to storage area Networks. Now a day, fiber channels are becoming dominant in storage area networks. With fast developing network technologies iSCSI made all companies to seriously think about the implementation of future storage network. ISCSI storage network based upon Cisco’s catalyst 6500 gigabit Ethernet switch and SN5420 storage router using fiber channel for storage access.
users create a separate storage network using Ethernet. This protocol uses Ethernet as a transport for data from servers to storage area Networks. Now a day, fiber channels are becoming dominant in storage area networks. With fast developing network technologies iSCSI made all companies to seriously think about the implementation of future storage network. ISCSI storage network based upon Cisco’s catalyst 6500 gigabit Ethernet switch and SN5420 storage router using fiber channel for storage access.