The IBM System z9 and Virtualized Storage: Consolidation Drives Virtualization in Storage Networks

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1 The IBM System z9 and ized Storage: Consolidation Drives ization in Storage Stephen R. Guendert, PhD(cand) Principal Engineer Brocade 26 UK CMG Forum

2 Agenda Fundamentals Forces driving virtualization Concepts Consolidation Drives ization in Storage Application Fibre Channel Improves Utilization and Scalability References Articles and Standards Consolidation Drives ization in Storage 2

3 Introduction Explore the fundamentals of virtualization Server, fabric, link, and address/access Consolidation Drives ization in Storage December 2006 / January 2007 Fibre Channel Improves Utilization and Scalability February / March 2007 Examine fundamentals in theory Server N_Port Identifier ization (NPIV) Fabric Fabric Identifier Inter-fabric Routing Apply theory to a practical application Consolidation Drives ization in Storage 3

4 Fundamentals NPIV Fabrics Frame Tagging Translation and Routing

5 What s Driving Server ization? zseries support of zlinux Mainframe expanded to address open system applications Linux promoted as alternative to Unix Mainframe virtualization benefits Availability, serviceability, scalability, flexibility Initial constraints FCP requests are serialized by the FCP header doesn t provide image addresses FICON SB2 header provides additional addressing Channel ports are underutilized Resulting cost / performance benefit is not competitive Consolidation Drives ization in Storage 5

6 Technology Behind Server ization N_Port Identifier ization (NPIV) N_Port becomes virtualized Supports multiple images behind a single N_Port N_Port requests more than one FCID FLOGI provides first address FDISC provides additional addresses All FCID s associated with one physical port Fabric Login Fibre Channel Address Fabric Discover Fibre Channel Address Consolidation Drives ization in Storage 6

7 What s Driving Fabric ization? SAN Sprawl Organic growth of SANs is creating large physical SAN infrastructures The need to merge data centers produces larger SANs Acquisition of data centers forces SAN expansion Controlling the sprawl motivates virtualization Simplified management Local administration Access to centralized services Consolidation Drives ization in Storage 7

8 Technology Behind Fabric ization Fabric Identifier (VFID) Fabric becomes virtualized Supports multiple common domains on the same switch Inter-fabric Routing (IFR) Fabric routing becomes virtualized Address Translation supports multiple overlapping device addresses Fabric Configuration Administrative domains Utilizes existing zoning enforcement techniques to create virtual fabrics Storage Area Utilizes expanded addressing to create virtual fabrics Partitions Utilizes frame tagging to create virtual fabrics and virtual links Consolidation Drives ization in Storage 8

9 Expanded Fibre Channel Addressing Start of Frame Fabric Tagging Header With 12-bit VF_ID FC-IFR Encapsulation Header Inter-Fabric Routing Header With 12-bit Source F_ID and Destination F_ID Fibre Channel Header With 3 Byte D_ID 4,096 Fabric Identifiers Encapsulation Header - Identical to FC Header 4,096 Fabric Identifiers FC Header Data Field End of Frame Consolidation Drives ization in Storage 9

10 Concepts Consolidation Drives ization in Storage

11 Example: Consolidation through ization Dual production fabrics Four 64-port Directors Cascaded across two sites Backup fabric Two 24-port es Cascaded across two sites Devices Open System Servers and Storage Mainframe Server and Storage Consolidation Drives ization in Storage 11

12 Dispersed Storage Network Site A Site B Servers Storage DASD Fabric #1 Fabric #2 Servers Storage DASD z9 Backup Fabric z9 Tape Tape Consolidation Drives ization in Storage 12

13 Distributed Storage Network Port Count and Utilization Rate Consolidation Drives ization in Storage 13

14 Server Consolidation through N_Port Identifier ization z9 Mainframe Fabric #1 Fabric #2 Backup Fabric Consolidation Drives ization in Storage 14

15 Consolidated Servers Site A Site B Mainframe Mainframe Fabric #1 z9 Storage Fabric #2 z9 Storage DASD Backup Fabric DASD Tape Tape Consolidation Drives ization in Storage 15

16 ized Storage Network z9 Mainframe 1 Fabric #1 2 Fabric #2 Backup Fabric Backup Consolidation Drives ization in Storage 16

17 Consolidated Storage Network Site A Site B Mainframe Fabric 1 Mainframe 1 3 z9 Storage DASD 2 Backup Fabric 2 Fabric Backup 4 B2 z9 Storage DASD Tape Tape Consolidation Drives ization in Storage 17

18 Consolidated Storage Network Port Count and Utilization Rate Consolidation Drives ization in Storage 18

19 Application Fibre Channel Improves Utilization and Scalability

20 Consolidated Storage Network Site A in Denver Site B in Englewood Mainframe Fabric 1 Mainframe 1 3 z9 Storage DASD 2 Backup Fabric 2 Fabric Backup 4 B2 z9 Storage DASD Tape Tape Consolidation Drives ization in Storage 20

21 Fabric Tagging Site A in Denver Site B in Englewood 1 2 Backup B2 4 3 Tagging Logic Tagging Logic Physical Ports Physical Ports Long Distance ISLs with Fabric Tagging Consolidation Drives ization in Storage 21

22 Fabric Tagging Site A in Denver Site B in Englewood 1 2 Backup Tagging Logic Fabric #1 Fabric Tagging ISL Fabric #2 Fabric Backup Tagging Logic 1 2 Backup Consolidation Drives ization in Storage 22

23 Expanding Data Centers Auxiliary Data Center in Englewood Tape Main Data Center in Denver Remote Data Center in Boulder z9 Fabric 1 Fabric ID =8 Backup Fabric 2 Fabric ID = 9 DASD Storage z9 DASD Storage z9 DASD Tape Consolidation Drives ization in Storage 23

24 Proxy N_Ports Tape WWN Z N_Port_ID Proxy N_Ports z9 WWN Q N_Port_ID Fabric 1 Backup Fabric 2 z9 WWN Q N_Port_ID Tape WWN Z N_Port_ID Consolidation Drives ization in Storage 24

25 Inside an IFR Proxy devices from Backup Fabric 2 at the remote Boulder site Physical Chassis in Denver Inter-Fabric Router Proxy Nx_Port Z Translate Domain 7 Proxy Nx_Port C Translate Domain 8 Connections to remote sites Proxy devices from the future Littleton site 1 2 Tagging Logic Q Physical Ports Consolidation Drives ization in Storage 25

26 Expanded Fibre Channel Addressing Start of Frame Fabric Tagging Header With 12-bit VF_ID FC-IFR Encapsulation Header Inter-Fabric Routing Header With 12-bit Source F_ID and Destination F_ID Fibre Channel Header With 3 Byte D_ID 4,096 Fabric Identifiers Encapsulation Header - Identical to FC Header 4,096 Fabric Identifiers FC Header Data Field End of Frame Consolidation Drives ization in Storage 26

27 Summary Explored the fundamentals of virtualization Server, fabric, link, and address/access Consolidation Drives ization in Storage December 2006 / January 2007 Fibre Channel Improves Utilization and Scalability February / March 2007 Examined fundamentals in theory Server N_Port Identifier ization Fabric Fabric Identifier Inter-fabric Routing Apply theory to a practical application Consolidation Drives ization in Storage 27

28 References

29 zjournal Articles Consolidation Drives ization in Storage December 2006 / January Fibre Channel Improves Utilization and Scalability February / March Consolidation Drives ization in Storage 29

30 Standards and NPIV FC-LS Describes FDISC use to allocate additional N_Port_IDs in Section Service Parameters for FDISC are described in Section 6.6 NV_Ports are treated like any other port Exception is they use FDISC instead of FLOGI Documents the responses to NV_Port related ELSs in section FDISC, FLOGI and FLOGO FC-GS-5 Describes Name Server queries in Permanent Port Name and Get Permanent Port Name command Based on the N_Port ID (G_PPN_ID) FC-DA Profiles the process of acquiring additional N_Port_IDs in Clause v2 FC-MI-2 Profiles how the fabric handles NPIV requests New Service Parameters are defined in Section 6.3 Name Server Objects in and v4 The PPN shall be the F_Port Name in FC-GS-6 Consolidation Drives ization in Storage 30

31 THANK YOU

32 About the Authors Scott Kipp Scott develops standards, including NPIV and virtual fabrics, for Brocade. He has written several books for the Fibre Channel industry Association and speaks with storage network user groups about his latest book, Fibre Channel Advances. Steve Guendert Steve is Brocade s Mainframe Solutions principal engineer and is an industry expert on ESCON and FICON. He has an MBA and an MS in Management Information Systems and is currently completing his Ph.D. sguender@brocade.com Howard Johnson Howard is a Software Architect at Brocade and is responsible for furthering Brocade s lead in FICON technology. His expertise encompasses Brocade s ESCON and FICON products and includes an extensive relationship with IBM s zseries I/O development team. hjohnson@brocade.com Consolidation Drives ization in Storage 32

33 Speaker Biography: Steve Guendert Brocade Principal Engineer, focused on mainframe SHARE Board of Directors (Director of IT) Nominee for Computer Measurement Group (CMG) BoD 2007 CMG Storage Subject Chair Academic PhD Coursework completed (CS/MIS) (stats-performance) M.S. in MIS dissertation topic on Enterprise I/O subsystems and designing continuous availability data centers Industry experience IBM, McDATA, CNT, Brocade Ohio Valley CMG Regional Chairman CMG Editorial Review Board (ERB), zjournal ERB Published papers in zjournal, CMG, NaSPA Technical Support, DRJ Consolidation Drives ization in Storage 33

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