1. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) Module 3.4

2. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 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

3. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

4. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

5. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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 = IP = FC Switch Servers Switch Storage

6. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 6 FC IP FC IP FC/ IP IP IP/ FC IP/ FC IP/ FC 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 (point to point)  Fibre Channel end points  iFCP – IP as the inter-switch fabric  Fibre Channel end points IP FC

7. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 7 IP Storage Approaches iSCSI FC IP Network iFCPFCIP iFCP Switch FCIP Router iSCSI/FC Gateway Servers Storage

8. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 8 IP Storage Deployment Models = IP = FC 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 = FC = IP = FC = IP = FC

9. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

10. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 10 Benefits of IP SAN  Cost Effective  Extend the reach of a SAN

11. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

12. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

13. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

14. © 2007 EMC Corporation. All rights reserved. Internet Protocol 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

15. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 15 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 IP Datagram IP Header TCP Header FCIP Header IP Payload Fibre Channel Frame SOF FC Header CRC EOF SCSI Data FCIP Encapsulation

16. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 16 FCIP Benefits  FCIP – Best of both technologies – Support for existing applications – Cost effective – Multi-point networking 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

17. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 17 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 IP Header TCP Header iFCP Header IP Payload Fibre Channel Frame SOF FC Header CRC EOF SCSI Data iFCP Address Translation & Encapsulation

18. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 18 iFCP Benefits  Works with wide range of devices  Flexible  Less potential bottlenecking vs. FCIP

19. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 19 iFCP Maps FCP to an IP Fabric Device-to-device session IP Network iFCP Gateway FC Switch FC Loop Disks iFCP Gateway FC Tape Library FC Server

20. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 20 iFCP SAN ASAN B The two fabrics remain separate Switch Servers Storage Switch Storage Servers Gateway

21. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 21 iSCSI  A method to transfer blocks of data using the TCP/IP network  Serialized service delivery subsystem  SCSI protocol over IP

22. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 22 iSCSI Model Layers IP Header TCP Header iSCSI Header IP Payload SCSI Data SCSI encapsulation IP Datagram Storage

23. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 23 iSCSI Storage Models  Native  Bridging = IP = FC Switch Servers Storage Gateway

24. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 24 Controlling IP SANS Target Z Initiator B Initiator C Initiator A iSNS IP Network A B C Target Z - Device A – Initiator A Target Z - Device B – Initiator B Target Z - Device C – Initiator C

25. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 25 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

26. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 26 iSCSI Nodes  A single Initiator or Target  Names are assigned to all Nodes  Independent of address

27. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 27 Lesson Summary Topics in this lesson included:  The basic architecture of FCIP  The basic architecture of iFCP  The basic architecture of iSCSI

28. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 28 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

29. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 29 Remote Backup and Restore IP Network FC Servers Storage Disks Server

30. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 30 Remote Data Replication IP Network FC Servers Storage Disks Server

31. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 31 Storage Consolidation/Dual Purpose IP Network IP Network Servers Switch Disks Switch Disks Servers

32. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 32 Lesson Summary Topics in this lesson included:  Remote backup and restore  Remote data replication  Storage consolidation

33. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 33 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

34. © 2007 EMC Corporation. All rights reserved. Internet Protocol Storage Area Networks (IP SAN) - 34 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?