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Comprehensive Guide to Storage and Server Virtualization at Seton Hall University

This document discusses the architecture and evolution of storage and server virtualization at Seton Hall University. Covering key topics such as the history of virtualization, design considerations, and technology choices, it highlights the benefits of storage virtualization including centralized management, replication, and flexibility. A look at the implementation of SAN technologies and various virtualization configurations is provided, alongside examples from the operational environment, including impacts on multiple applications and server configurations within the university's ecosystem.

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Comprehensive Guide to Storage and Server Virtualization at Seton Hall University

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  1. Storage and Server Virtualization Matt Stevenson – IT Architect Seton Hall University stevenma@shu.edu

  2. About Seton Hall University • Located in South Orange NJ • Approx 12,000 Students/Faculty/Staff • Main campus and Law School

  3. Agenda • Overview of virtualization topics • Storage Virtualization • History at Seton Hall • Design and selection of storage virtualization solution • Main features of storage virtualization • Sample storage virtualization configuration (Banner) • Server Virtualization • History at Seton Hall • Design and selection of server virtualization solution • Main features of server virtualization • Sample server virtualization configuration (Banner) • Possible virtualization configurations

  4. Storage Virtualization

  5. What is Storage Virtualization? • Bypass vendor limitations • Replication • Mirroring/Storage migration • Single Pane of glass • Types of Storage Virtualization • Array Based • In Band (Appliance) • Out of band (Appliance)

  6. History 2004 / 2005 – (1) • In 2004 SHU had stand alone servers and various disk islands • Most storage was direct attached • Standard “1U” rack servers, one per application

  7. History 2004 / 2005 – (2) • IBM 2105 - ESS “Shark” • Direct attached via SCSI • Several stand alone IBM disk units • Direct attached via SCSI • Each server had local disk • Different controllers, RAID replacement procedures

  8. Architectural Changes (1) • Implement SAN • Reduce dependency on direct attached disk • Provide more centralized management of disk • Reduce server sprawl • Research Virtual Machine technology • Focus on Blade technology • Smaller size, power, and cabling requirements

  9. Architectural Changes (2) • IBM Blade Center Technology • Modular design • Includes Network, Storage Switch, and Management in single chassis • Lower power requirements for servers • 70 Servers per rack • Boot from SAN for no moving parts on blades

  10. Architectural Changes (3) • Implement SAN • Reduce server sprawl • Focus on Blade technology • All led to: • Requirement for Storage Virtualization

  11. Storage (SAN) • SAN Storage • IBM Shark • IBM DS8000 • StorageTek Flex380 • Infortrend • SAN Switch/Infra • qLogic SANBox 9000 (Blades) • Up to 256 Ports • Ability to expand SAN to other buildings/long distance (DR, etc)

  12. Storage Virtualization (1) Blade 1 Blade 2 Blade 3 Blade 4 Server SAN Switch Virtualization Storage SAN Switch 1 SAN Switch 2 IPStor 1 IPStor 2 DS8000 Flex380

  13. Storage Virtualization (2) • FalconStorIPStor software • “Virtualizes” all storage, allows resize, assign/remove on the fly • Allows mirroring/physical disk moves with no downtime (between multiple physical storage units) • Single “pane of glass” management for all storage • Freedom from vendor limitations (LUNs, sizes, etc) • Snapshots of live data possible

  14. Storage Virtualization (3) • FalconStorIPStor software (v5.1) • In-band solution • Active/Active cluster • Single software interface for all management (Linux/Windows) • Clients available for snapshots for Oracle, Notes/Exchange, SQL Server, etc

  15. Storage Virtualization (4) • Tasks for administrators: • Mirror data (Upgrades, backups) • Move data • Add additional storage from selected tier • Add new servers to storage pool

  16. Storage Virtualization (5) • Mirror Command • Move data • “Swap” mirrors • “Promote” mirror to primary storage • Moving storage from one array to another

  17. System Performance • Applications currently utilizing storage virtualization – 100+ server clients • Lotus Domino (campus wide) • Sungard Banner (Approx 12 instances with multiple add-ons) • File/Print services (campus wide) • Content management system • Luminis Portal • VMWare ESX Server

  18. Additional Features • Replication • “Hot Zone” • Snapshots • Reports

  19. Storage Virtualization Sample Configuration Banner ERP System

  20. Storage Virtualization and Banner (1) • Banner Hardware and Operating Systems Hardware (Application and DB servers) • IBM LS21 AMD Opteron Dual Core, Dual Processor blade • 8GB RAM • 4Gb Fiber Channel HBA, Boot from SAN • Dual GigE Ethernet • Operating System • RedHat Enterprise Linux AS 3.0 – Update 9 (32Bit)

  21. Storage Virtualization and Banner (2) • Production Banner layout Prod App Server #1 Prod App Server #2 Banner Prod DB #1 Storage Virtualization DS8000 Storage Flex380 Storage Data Mirrored

  22. Storage Virtualization and Banner (3) • Banner DB Layout Virtual Disk Mount Point • 32GB OS Filesystems • 32GB /u00/app/oracle • 100GB /u00/archive • 120GB /u00/backup • 30GB /u00/oradata • 100GB /u01/oradata • 32GB /u02/oradata • 32GB /app/sct • Banner App Server Layout Virtual Disk Mount Point • 32GB OS Filesystems • 32GB /u00/app

  23. Storage Virtualization and Banner (4) • Storage Virtualization Banner tasks • Mirror Data • Specific virtual disks or entire system • Monitor performance • Read/Write usage of specific virtual disks or entire system • Resize virtual disks and filesystems when necessary • RHEL AS 3.0 requires offline filesystem resize • Online resize available in RHEL AS 4.0+

  24. Storage Virtualization - Review • Single pane of glass for administration • Migration between physical disk arrays is a non-issue • Simplification means no full time storage administrator necessary • Avoid Single Point of Failure • Storage Virtualization Banner usage is no different than any other system

  25. Server Virtualization

  26. Server Virtualization - History • Single standalone servers • One server per application • Development environment for each production environment

  27. Server Virtualization (1) • VMWare Infrastructure Enterprise v3 • Single pane of glass to monitor, configure, and provision new servers (VirtualCenter) • “VMotion” technology to move virtual machines between VMWare servers • Virtual machines will be “SMP” capable • Cluster aware filesystem (VMFS) • High Availability (VirtualCenter)

  28. Server Virtualization (2) Seton Hall Environment • (10) VMWare ESX Servers • (6) IBM x3850m2 • “Virtual Infrastructure Enterprise 3” • 64GB RAM each • VirtualCenter Management Server • Win2k3 Blade

  29. Server Virtualization (3) VMWare 1 VMWare 2 VirtualCenter Mgmt VMWare 3 VMWare 4 Vmotion

  30. Server Virtualization – Virtual Center • Virtual Center • Single management console to view all VMWare servers • Can be single point of failure (won’t bring down VMs) • Required for Vmotion, HA/DR • Accounts can be from Active Directory

  31. Server Virtualization - Vmotion • Vmotion • “Live” migration of virtual machines between VMWare servers • Requires dedicated GigE connection • Requires shared SAN disks (VMFS) • Requires “like” CPUs on VMWare servers • Review VMWare documentation closely • VirtualCenter can dynamically move VMs based on system load

  32. Seton Hall Server Virtualization (1) • How Seton Hall is utilizing Server Virtualization • 70+ Virtual Machines • Production and Development systems • VMotion implemented to avoid VMware system downtime

  33. Seton Hall Server Virtualization (2) • How Seton Hall is utilizing Server Virtualization • Remote access to development systems • From user’s desktop • Remote media mount (CD, Floppy, etc) • Storage flexibility (adding virtual disks on the fly) • “Virtual Appliances” • http://www.vmware.com/appliances

  34. Seton Hall Server Virtualization (3) • How Seton Hall is utilizing Server Virtualization • Migration of old hardware/servers • Out of date/out of warrantee physical hardware • Schedule restarts/power on-off/relocation of VMs

  35. Seton Hall Server Virtualization – Performance • Sample Seton Hall Applications • Oracle Identity Manager (Development) • Cacti SNMP statistics (Production) • ezProxy reverse proxy server (Production) • R25 Scheduling (Development) • Active Directory (Development) • Sungard Banner (Development) • Lecture123 (Production)

  36. Seton Hall Server Virtualization – Performance • VMWare ESX Server and VirtualCenter provide performance graphs • Exportable to Excel

  37. Server Virtualization Sample Configuration Banner ERP

  38. Server Virtualization and Banner (1) • Current Server Virtualization Banner environment is Test/Development, not Production. • Banner environment contains both virtualized database and application servers • Focus on specific week of training classes done on purely virtual Banner environment • Training class generates more I/O request than usual test/development usage

  39. Server Virtualization and Banner (2) • Training class virtual Banner system configuration • Two VMWare ESX 3.0 Virtual machines • RHEL AS 3.0 Update 9 (32bit) • 1 Virtual CPU • 1GB RAM • 32GB OS Virtual Disk • Application Server Specific • 32GB Virtual Disk for Oracle install • DB Server Specific • (8) 32GB Virtual Disks in OFA layout

  40. Server Virtualization and Banner (3) • Application Server Performance - CPU

  41. Server Virtualization and Banner (4) • Application Server Performance - Disk

  42. Server Virtualization and Banner (5) • Application Server Performance - Memory

  43. Server Virtualization and Banner (6) • Database Server Performance - CPU

  44. Server Virtualization and Banner (7) • Database Server Performance - Disk

  45. Server Virtualization and Banner (8) • Database Server Performance - Memory

  46. Seton Hall Server Virtualization – Banner Testing Results • Application and Database servers were well within performance limits • Users had no idea systems were virtual, not physical • No reported performance issues during lab session

  47. Seton Hall Server Virtualization – Next Steps • More performance testing on virtual systems • If results continue to match current testing results, start moving all test and development systems to virtualized environment • Test 3rd party system cloning tools for P2V images of systems for DR

  48. Seton Hall Server Virtualization – Future Items • Migration to VMWare Infrastructure Enterprise 3.5 • VMware DRS • Dynamically balance system load • Review and implement VMWare Update Manager • Automated patching for ESX Server and VMs • Lab replacement using VI3/VDI • Virtual Desktop Infrastructure for lab machines

  49. Possible Virtualization Configurations

  50. Virtualization Configurations (1) • View VMWare configuration as layers • VMWare Virtual Machines (Servers or Desktops) • VMWare ESX Servers • VMWare Virtual Center • Virtual servers/desktops can change physical location regularly • Storage and Server virtualization work together • DRS (Distributed Resource Scheduling) for resource balancing

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