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Internet Protocol Storage Area Networks (IP SAN)

Internet Protocol Storage Area Networks (IP SAN). Module 3.4. IP Storage Area Networks. Upon completion of this module, you will be able to: Describe the benefits of IP SAN. Describe IP convergence in the SAN and its implications. Describe and discuss the basic architecture of FCIP iFCP

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Internet Protocol Storage Area Networks (IP SAN)

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  1. Internet ProtocolStorage Area Networks (IP SAN) Module 3.4

  2. IP Storage Area Networks Upon completion of this module, you will be able to: • Describe the benefits of IP SAN. • Describe IP convergence in the SAN and its implications. • Describe and discuss the basic architecture of • FCIP • iFCP • iSCSI • Explain potential applications of IP SAN technology. IP Storage Area Networks ( IP SAN)

  3. In this module … This module contains the following lessons: • IP SAN Overview. • IP SAN Protocols. • Applications of IP SAN. IP Storage Area Networks ( IP SAN)

  4. Lesson: IP SAN Overview Upon completion of this lesson, you will be able to: • Describe the benefits of IP SAN. • Describe the IP convergence in the SAN and its implications. • List the three common IP SAN approaches. • List the three deployment models (topologies) for IP SAN. IP Storage Area Networks ( IP SAN)

  5. Introduction • Traditional SAN technology is built around Fibre Channel. • IP technology is emerging as an alternative or supplemental transport for storage traffic. Servers Servers Switch Switch Storage Storage = IP = FC Servers Servers IP Storage Area Networks ( IP SAN)

  6. IP FC IP IP IP Block Storage over IP – Protocol options • iSCSI • SCSI over IP • IP encapsulation done on host / HBA(host bus adapter) • Hardware-based gateway to Fibre Channel storage • FCIP • Fibre Channel-to-IP bridge / tunnel (pointto point) • Fibre Channel end points • iFCP • IP as the inter-switch fabric • Fibre Channel end points IP FC FC IP IP FC/IP IP/ FC FC/IP IP/ FC IP Storage Area Networks ( IP SAN)

  7. IP Storage Approaches FCIP iFCP iSCSI Servers FC FC FCIP Router iFCP Switch IPNetwork IPNetwork IPNetwork IPNetwork FCIP Router iFCPSwitch iSCSI/FC Gateway FC FC FC Storage IP Storage Area Networks ( IP SAN)

  8. = IP = FC = IP = FC = IP = FC = IP = FC IP Storage Deployment Models Native • All Ethernet (No Fibre Channel) • iSCSI Protocol • Ethernet Switches & Routers Bridging • Servers - Ethernet Attached • Storage - FC Attached (SAN or DAS) • iSCSI Protocol Extension • Servers & Storage - SAN Attached • FCIP or iFCP Protocol • SRDF IP Storage Area Networks ( IP SAN)

  9. Market Drivers for SAN Internetworking • Fibre Channel SAN challenges. • IP SAN enablers. • Easy to leverage IP equipment and expertise to help manage data in conjunction with Fibre Channel SANs. IP Storage Area Networks ( IP SAN)

  10. Benefits of IP SAN • Cost Effective • Extend the reach of a SAN IP Storage Area Networks ( IP SAN)

  11. IP is Cost Effective • Most organizations already have IP networks and familiarity with traditional network management. • Leverages existing Fibre Channel applications. IP Storage Area Networks ( IP SAN)

  12. Extend the Reach of Your SAN • Standard Fibre Channel Distances. • IP Extends Fibre Channel applications over regional/global distances. • At higher link speeds, IP can handle synchronous applications. IP Storage Area Networks ( IP SAN)

  13. Lesson Summary Topics in this lesson included: • Describe the benefits of IP SAN. • Describe the IP convergence in the SAN and its implications. • List the three common IP SAN approaches. • List the three deployment models (topologies) for IP SAN. IP Storage Area Networks ( IP SAN)

  14. Lesson: IP SAN Protocols Upon completion of this lesson, you will be able to: • Describe and discuss the basic architecture of • FCIP • iFCP • iSCSI IP Storage Area Networks ( IP SAN)

  15. FCIP Encapsulation FCIP Encapsulation IP Payload IP Payload Fibre Channel over IP - FCIP • Encapsulates FC frames in IP packets. • Creates virtual FC links that connect devices and fabric elements. • Includes security, data integrity, congestion and performance specifications. Fibre Channel Frame FCHeader SCSI Data SCSI Data SOF CRC EOF IPHeader TCPHeader FCIPHeader IP Datagram IP Storage Area Networks ( IP SAN)

  16. Fibre Channel • Widely available • Low latency • High reliability • Off-the-shelf solutions • Mature standards IP • Widely available • Accepted technology • Trained user base • Affordable • Mature standards FCIP Benefits • FCIP • Best of both technologies • Support for existing applications • Cost effective • Multi-point networking IP Storage Area Networks ( IP SAN)

  17. Fibre Channel Frame FCHeader SCSI Data SCSI Data SOF CRC EOF iFCP Address Translation &Encapsulation iFCP Address Translation &Encapsulation IP Payload IP Payload Internet Fibre Channel Protocol - iFCP • Gateway-to-gateway protocol • IP switches & routers replace FC switches • Transparent to FC drivers • FC transport uses TCP connections • Point-to-multipoint networking possible IPHeader TCPHeader iFCPHeader IP Storage Area Networks ( IP SAN)

  18. iFCP Benefits • Works with wide range of devices. • Flexible. • Less potential bottlenecking vs. FCIP. IP Storage Area Networks ( IP SAN)

  19. iFCP Maps FCP to an IP Fabric FC Loop Disks FC Server FC Tape Library iFCP Gateway iFCP Gateway IP Network iFCP Gateway iFCP Gateway FC Switch Device-to-device session IP Storage Area Networks ( IP SAN)

  20. Addressing and Routing • Local Mode. • Address Transparent Mode. • Routing between gateway regions is IP-only. IP Storage Area Networks ( IP SAN)

  21. iFCP Servers Servers Gateway Gateway Switch Switch SAN A SAN B The two fabrics remain separate Storage Storage IP Storage Area Networks ( IP SAN)

  22. iSCSI • A method to transfer blocks of data using the TCP/IP network. • Serialized service delivery subsystem. • SCSI protocol over IP. IP Storage Area Networks ( IP SAN)

  23. SCSI encapsulation IP Payload IP Payload iSCSI Model Layers Storage SCSI Data IPHeader TCPHeader iSCSIHeader IP Datagram IP Storage Area Networks ( IP SAN)

  24. iSCSI Storage Models • Native • Bridging Switch Storage Gateway Servers = IP = FC IP Storage Area Networks ( IP SAN)

  25. Controlling IP SANS A iSNS B Target Z Target Z - Device A – Initiator A Target Z - Device B – Initiator B Target Z - Device C – Initiator C C IP Network Initiator A Initiator C Initiator B IP Storage Area Networks ( IP SAN)

  26. Internet Storage Name Server Overview • iSNS is a client/server model. • The iSNS server is passive. • iSNS clients register & manipulate the objects in the iSNS server. • An iSNS server can be hosted on a target, initiator, or stand-alone server with a specified IP address. IP Storage Area Networks ( IP SAN)

  27. Security Keys iSNS Example Management Platform Storage Device B iSNS Discovery Domains Host A Device A Storage Host C Host B IP Storage Area Networks ( IP SAN)

  28. iSCSI Nodes • A single Initiator or Target • Names are assigned to all Nodes • Independent of address IP Storage Area Networks ( IP SAN)

  29. Network Portal10.1.1.1 Network Portal10.1.1.2 Network Portal10.1.2.2TCP port3260 Network Portal10.1.2.1TCP port3260 Architectural Model iSCSI Node Initiator iSCSI Node Target IP Network Network Entity iSCSI Client Network Entity iSCSI Server IP Storage Area Networks ( IP SAN)

  30. FCIP, iFCP and iSCSI Comparison IP Storage Area Networks ( IP SAN)

  31. Lesson Summary Topics in this lesson included: • The basic architecture of FCIP. • The basic architecture of iFCP. • The basic architecture of iSCSI. IP Storage Area Networks ( IP SAN)

  32. Lesson: IP SAN Applications Upon completion of this lesson, you will be able to: • Describe common applications of IP SAN technology such as: • Remote Backup and Restore • Remote Data Replication • Storage Consolidation IP Storage Area Networks ( IP SAN)

  33. Remote Backup and Restore Disks Server Servers FC FC IP Network Storage FC Disks Server Disks IP Storage Area Networks ( IP SAN)

  34. Remote Data Replication Disks Server Servers FC FC IP Network Storage FC Disks Disks Server IP Storage Area Networks ( IP SAN)

  35. IP Network Storage Consolidation/Dual Purpose IP Network Servers Disks Servers Switch Switch Servers Disks Disks Switch Switch Disks Disks Disks IP Storage Area Networks ( IP SAN)

  36. Lesson Summary Topics in this lesson included: • Remote backup and restore • Remote data replication • Storage consolidation IP Storage Area Networks ( IP SAN)

  37. Module Summary Topics in this module included: : • The benefits of IP SAN. • The IP convergence in the SAN and its implications • The basic architecture of FCIP • The basic architecture of iFCP • The basic architecture of iSCSI • Application of IP SAN technology IP Storage Area Networks ( IP SAN)

  38. Check Your Knowledge • What are the benefits of IP SAN? • What are the three common protocols for IP SAN? • What data storage application could benefit from an IP SAN solution? IP Storage Area Networks ( IP SAN)

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