The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform

Suresh Muknahallipatna - One of the best experts on this subject based on the ideXlab platform.

  • Fibre Channel Switch Modeling at Fibre Channel-2 Level for Large Fabric Storage Area Network Simulations using OMNeT++
    GSTF Journal on computing, 2014
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    Abstract—Typically, in the current enterprise data centers dedicated fabrics or networks are implemented to meet their LAN, Inter-Processor communication and storage traffic requirements. The storage traffic requirements of a group of servers are met through multiple storage area networks based on Fibre Channel, which has become the standard connection type. Typically, this Fibre Channel storage area networks are small (maximum of 32 switches/directors in a single fabric) and do not experience any scaling, stability and other performance issues. The advent of I/O consolidation in enterprise data centers for multiple traffic types to converge on to a single fabric or network (typically Ethernet platform) to reduce hardware, energy and management costs has also the potential to allow implementation of large storage area networks based on the Fibre Channel standards. Large storage area networks are being planned with more than two hundred switches/directors in a single fabric or network in addition to servers and storages connected to the fabric on Ethernet platforms. Even though these large storage area networks are envisioned to operate on Ethernet platform, they still have to satisfy the stringent operating and performance requirement set forth by the Fibre Channel standards. The two important issues of concern with large storage area networks are scaling and stability. The scaling and stability issues are dependent on the interactions and performance capabilities of various fabric servers located on each switch/director in the fabric in order to provide fabric services. In order to determine the extent of scaling and stability issues of a large fabric first the detailed models of the switch/director addressing the operations of the individual fabric servers are required. Next, the interactions of the switches/directors using the detailed models are to be simulated to study the scaling and stability issues. In this paper, the detailed modeling of the Fibre Channel switch and the fabric servers using the OMNeT++ discrete event simulator is presented first. Detailed models are developed addressing the behavior of the switch at the level-2 of the Fibre Channel Protocol since this layer addresses the requirements and operations of various mandatory fabric services like fabric build, directory, login, nameserver, management, etc. Next, using the OMNET++ discrete event simulator large fabrics are simulated. The results from the simulation are compared against the test bed traffic and the accuracy is demonstrated. Also, results and analysis of multiple simulations with increasing fabric size are presented.

  • LCN - Performance analysis of a Fibre Channel switch supporting node port identifier virtualization: Preliminary results
    2009 IEEE 34th Conference on Local Computer Networks, 2009
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    The server virtualization architecture, encompassing the sharing of data storage subsystems among the virtual servers or operating systems on a single host server using I/O Channel sharing capabilities in Fibre Channel fabrics, was pioneered by IBM through their System z9 mainframe and its predecessors. The implementations of I/O Channel sharing capabilities were based on the Fibre connectivity Channel standard. With the advent of sharing small computer system interface devices among host servers in storage area networks using the Fibre Channel Protocol, certain problems arose in sharing the I/O Channels between virtual servers on a host. To implement server virtualization with this new environment, IBM invented the N-Port identifier virtualization architecture, which is now part of the Fibre Channel standards. This paper examines the performance of a Fibre Channel switch supporting N-Port identifier virtualization. In particular, the switch latency for discover fabric services command during the process of granting multiple virtual N-Port identifiers to single and multiple hosts, hosting a large number of virtual servers is examined.

  • Fibre Channel switch modeling at Fibre Channel 2 level for large fabric storage area network simulations using omnet preliminary results
    Local Computer Networks, 2007
    Co-Authors: Suresh Muknahallipatna, Jerry Hamann
    Abstract:

    Medium sized storage area networks using Fibre Channel have been a common implementation for data storage in enterprise data centers. The ever increasing demand for large storage pools has paved to the idea of implementing large distributed storage area networks also known as large fabrics. The large fabrics seem to experience fabric scaling and fabric stability issues. These scaling and stability issues are related to the performance of various fabric servers of fabric services, such as fabric controller, fabric login, directory, etc., which are part of the Fibre Channel-2 level of the Fibre Channel Protocol. To determine the extent of scaling and stability issues of a large fabric an adequate tool is required. The tool could be an analytical model, a hardware simulator, or a discrete event software simulator. The discrete event software simulator provides a number of benefits over the analytical model and hardware simulator. In this paper, the modeling of a Fibre Channel switch using the OMNeT++ discrete event simulator and simulation of large fabric are presented. As a first step, only the Fibre Channel-2 level of the Fibre Channel switch is modeled since it is the layer containing various fabric services dealing with fabric building and managing. In this paper, the process of building a fabric and managing and how it is implemented in the simulator are discussed. Also, a preliminary analysis of the results in comparison to the test bed traffic is presented showing the accuracy and representation of an actual large fabric by the simulator.

  • LCN - Fibre Channel Switch Modeling at Fibre Channel-2 Level for Large Fabric Storage Area Network Simulations using OMNeT++: Preliminary Results
    32nd IEEE Conference on Local Computer Networks (LCN 2007), 2007
    Co-Authors: Suresh Muknahallipatna, Jerry Hamann
    Abstract:

    Medium sized storage area networks using Fibre Channel have been a common implementation for data storage in enterprise data centers. The ever increasing demand for large storage pools has paved to the idea of implementing large distributed storage area networks also known as large fabrics. The large fabrics seem to experience fabric scaling and fabric stability issues. These scaling and stability issues are related to the performance of various fabric servers of fabric services, such as fabric controller, fabric login, directory, etc., which are part of the Fibre Channel-2 level of the Fibre Channel Protocol. To determine the extent of scaling and stability issues of a large fabric an adequate tool is required. The tool could be an analytical model, a hardware simulator, or a discrete event software simulator. The discrete event software simulator provides a number of benefits over the analytical model and hardware simulator. In this paper, the modeling of a Fibre Channel switch using the OMNeT++ discrete event simulator and simulation of large fabric are presented. As a first step, only the Fibre Channel-2 level of the Fibre Channel switch is modeled since it is the layer containing various fabric services dealing with fabric building and managing. In this paper, the process of building a fabric and managing and how it is implemented in the simulator are discussed. Also, a preliminary analysis of the results in comparison to the test bed traffic is presented showing the accuracy and representation of an actual large fabric by the simulator.

Jerry Hamann - One of the best experts on this subject based on the ideXlab platform.

  • Fibre Channel switch modeling at Fibre Channel 2 level for large fabric storage area network simulations using omnet preliminary results
    Local Computer Networks, 2007
    Co-Authors: Suresh Muknahallipatna, Jerry Hamann
    Abstract:

    Medium sized storage area networks using Fibre Channel have been a common implementation for data storage in enterprise data centers. The ever increasing demand for large storage pools has paved to the idea of implementing large distributed storage area networks also known as large fabrics. The large fabrics seem to experience fabric scaling and fabric stability issues. These scaling and stability issues are related to the performance of various fabric servers of fabric services, such as fabric controller, fabric login, directory, etc., which are part of the Fibre Channel-2 level of the Fibre Channel Protocol. To determine the extent of scaling and stability issues of a large fabric an adequate tool is required. The tool could be an analytical model, a hardware simulator, or a discrete event software simulator. The discrete event software simulator provides a number of benefits over the analytical model and hardware simulator. In this paper, the modeling of a Fibre Channel switch using the OMNeT++ discrete event simulator and simulation of large fabric are presented. As a first step, only the Fibre Channel-2 level of the Fibre Channel switch is modeled since it is the layer containing various fabric services dealing with fabric building and managing. In this paper, the process of building a fabric and managing and how it is implemented in the simulator are discussed. Also, a preliminary analysis of the results in comparison to the test bed traffic is presented showing the accuracy and representation of an actual large fabric by the simulator.

  • LCN - Fibre Channel Switch Modeling at Fibre Channel-2 Level for Large Fabric Storage Area Network Simulations using OMNeT++: Preliminary Results
    32nd IEEE Conference on Local Computer Networks (LCN 2007), 2007
    Co-Authors: Suresh Muknahallipatna, Jerry Hamann
    Abstract:

    Medium sized storage area networks using Fibre Channel have been a common implementation for data storage in enterprise data centers. The ever increasing demand for large storage pools has paved to the idea of implementing large distributed storage area networks also known as large fabrics. The large fabrics seem to experience fabric scaling and fabric stability issues. These scaling and stability issues are related to the performance of various fabric servers of fabric services, such as fabric controller, fabric login, directory, etc., which are part of the Fibre Channel-2 level of the Fibre Channel Protocol. To determine the extent of scaling and stability issues of a large fabric an adequate tool is required. The tool could be an analytical model, a hardware simulator, or a discrete event software simulator. The discrete event software simulator provides a number of benefits over the analytical model and hardware simulator. In this paper, the modeling of a Fibre Channel switch using the OMNeT++ discrete event simulator and simulation of large fabric are presented. As a first step, only the Fibre Channel-2 level of the Fibre Channel switch is modeled since it is the layer containing various fabric services dealing with fabric building and managing. In this paper, the process of building a fabric and managing and how it is implemented in the simulator are discussed. Also, a preliminary analysis of the results in comparison to the test bed traffic is presented showing the accuracy and representation of an actual large fabric by the simulator.

Howard Johnson - One of the best experts on this subject based on the ideXlab platform.

  • Fibre Channel Switch Modeling at Fibre Channel-2 Level for Large Fabric Storage Area Network Simulations using OMNeT++
    GSTF Journal on computing, 2014
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    Abstract—Typically, in the current enterprise data centers dedicated fabrics or networks are implemented to meet their LAN, Inter-Processor communication and storage traffic requirements. The storage traffic requirements of a group of servers are met through multiple storage area networks based on Fibre Channel, which has become the standard connection type. Typically, this Fibre Channel storage area networks are small (maximum of 32 switches/directors in a single fabric) and do not experience any scaling, stability and other performance issues. The advent of I/O consolidation in enterprise data centers for multiple traffic types to converge on to a single fabric or network (typically Ethernet platform) to reduce hardware, energy and management costs has also the potential to allow implementation of large storage area networks based on the Fibre Channel standards. Large storage area networks are being planned with more than two hundred switches/directors in a single fabric or network in addition to servers and storages connected to the fabric on Ethernet platforms. Even though these large storage area networks are envisioned to operate on Ethernet platform, they still have to satisfy the stringent operating and performance requirement set forth by the Fibre Channel standards. The two important issues of concern with large storage area networks are scaling and stability. The scaling and stability issues are dependent on the interactions and performance capabilities of various fabric servers located on each switch/director in the fabric in order to provide fabric services. In order to determine the extent of scaling and stability issues of a large fabric first the detailed models of the switch/director addressing the operations of the individual fabric servers are required. Next, the interactions of the switches/directors using the detailed models are to be simulated to study the scaling and stability issues. In this paper, the detailed modeling of the Fibre Channel switch and the fabric servers using the OMNeT++ discrete event simulator is presented first. Detailed models are developed addressing the behavior of the switch at the level-2 of the Fibre Channel Protocol since this layer addresses the requirements and operations of various mandatory fabric services like fabric build, directory, login, nameserver, management, etc. Next, using the OMNET++ discrete event simulator large fabrics are simulated. The results from the simulation are compared against the test bed traffic and the accuracy is demonstrated. Also, results and analysis of multiple simulations with increasing fabric size are presented.

  • LCN - Performance analysis of a Fibre Channel switch supporting node port identifier virtualization: Preliminary results
    2009 IEEE 34th Conference on Local Computer Networks, 2009
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    The server virtualization architecture, encompassing the sharing of data storage subsystems among the virtual servers or operating systems on a single host server using I/O Channel sharing capabilities in Fibre Channel fabrics, was pioneered by IBM through their System z9 mainframe and its predecessors. The implementations of I/O Channel sharing capabilities were based on the Fibre connectivity Channel standard. With the advent of sharing small computer system interface devices among host servers in storage area networks using the Fibre Channel Protocol, certain problems arose in sharing the I/O Channels between virtual servers on a host. To implement server virtualization with this new environment, IBM invented the N-Port identifier virtualization architecture, which is now part of the Fibre Channel standards. This paper examines the performance of a Fibre Channel switch supporting N-Port identifier virtualization. In particular, the switch latency for discover fabric services command during the process of granting multiple virtual N-Port identifiers to single and multiple hosts, hosting a large number of virtual servers is examined.

Joseph Miles - One of the best experts on this subject based on the ideXlab platform.

  • Fibre Channel Switch Modeling at Fibre Channel-2 Level for Large Fabric Storage Area Network Simulations using OMNeT++
    GSTF Journal on computing, 2014
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    Abstract—Typically, in the current enterprise data centers dedicated fabrics or networks are implemented to meet their LAN, Inter-Processor communication and storage traffic requirements. The storage traffic requirements of a group of servers are met through multiple storage area networks based on Fibre Channel, which has become the standard connection type. Typically, this Fibre Channel storage area networks are small (maximum of 32 switches/directors in a single fabric) and do not experience any scaling, stability and other performance issues. The advent of I/O consolidation in enterprise data centers for multiple traffic types to converge on to a single fabric or network (typically Ethernet platform) to reduce hardware, energy and management costs has also the potential to allow implementation of large storage area networks based on the Fibre Channel standards. Large storage area networks are being planned with more than two hundred switches/directors in a single fabric or network in addition to servers and storages connected to the fabric on Ethernet platforms. Even though these large storage area networks are envisioned to operate on Ethernet platform, they still have to satisfy the stringent operating and performance requirement set forth by the Fibre Channel standards. The two important issues of concern with large storage area networks are scaling and stability. The scaling and stability issues are dependent on the interactions and performance capabilities of various fabric servers located on each switch/director in the fabric in order to provide fabric services. In order to determine the extent of scaling and stability issues of a large fabric first the detailed models of the switch/director addressing the operations of the individual fabric servers are required. Next, the interactions of the switches/directors using the detailed models are to be simulated to study the scaling and stability issues. In this paper, the detailed modeling of the Fibre Channel switch and the fabric servers using the OMNeT++ discrete event simulator is presented first. Detailed models are developed addressing the behavior of the switch at the level-2 of the Fibre Channel Protocol since this layer addresses the requirements and operations of various mandatory fabric services like fabric build, directory, login, nameserver, management, etc. Next, using the OMNET++ discrete event simulator large fabrics are simulated. The results from the simulation are compared against the test bed traffic and the accuracy is demonstrated. Also, results and analysis of multiple simulations with increasing fabric size are presented.

  • LCN - Performance analysis of a Fibre Channel switch supporting node port identifier virtualization: Preliminary results
    2009 IEEE 34th Conference on Local Computer Networks, 2009
    Co-Authors: Suresh Muknahallipatna, Joseph Miles, Howard Johnson
    Abstract:

    The server virtualization architecture, encompassing the sharing of data storage subsystems among the virtual servers or operating systems on a single host server using I/O Channel sharing capabilities in Fibre Channel fabrics, was pioneered by IBM through their System z9 mainframe and its predecessors. The implementations of I/O Channel sharing capabilities were based on the Fibre connectivity Channel standard. With the advent of sharing small computer system interface devices among host servers in storage area networks using the Fibre Channel Protocol, certain problems arose in sharing the I/O Channels between virtual servers on a host. To implement server virtualization with this new environment, IBM invented the N-Port identifier virtualization architecture, which is now part of the Fibre Channel standards. This paper examines the performance of a Fibre Channel switch supporting N-Port identifier virtualization. In particular, the switch latency for discover fabric services command during the process of granting multiple virtual N-Port identifiers to single and multiple hosts, hosting a large number of virtual servers is examined.

J Yan - One of the best experts on this subject based on the ideXlab platform.

  • Storage area network extension solutions and their performance assessment
    IEEE Communications Magazine, 2004
    Co-Authors: R Telikepalli, T Drwiega, J Yan
    Abstract:

    Several solutions are proposed to extend storage area networking solutions over distances of hundreds to thousands of kilometers. Native Fibre Channel or end-to-end Fibre Channel-based solutions can be offered over long distances using SONET-based networks. Protocols such as Internet SCSI (iSCSI), Internet Fibre Channel Protocol (iFCP) and Fibre Channel over TCP/IP (FCIP) are being proposed to enable storage area networking solutions over networks that use IP as their transport Protocol. Performance analysis of these solutions in terms of application throughput under variable network conditions of packet loss, bandwidth availability, extension distance, and TCP implementations in the sender and receiver is presented based on analytical modeling of different solutions.