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Hardware virtualization

Hardware virtualization

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Hardware virtualization

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  1. Hardware virtualization Virtual Data-center

  2. Benefits Testing Os development (lab environment) Segregation of resources Separation from host Compatibility to any operating system Remote Physical Access

  3. Valuable Resources Electricity Real-estate Equipment Networking equipment Servers PDU's Wiring

  4. Virtual Hardware

  5. Clustering Virtual Resources Live migration SAN migration Network Migration Cloning vs. templates Deployment (Rapid) Metered billing Low down time Easy upgrades (web) Thin provisioning and over subscribing Any guest system for customer

  6. Cloud Computing • Network capability • Network storage (iSCSI) • Fail-over • Redundant path (MPIO) • Management • Quorum

  7. Node Majority • No witness disk or quorum required • 50% of nodes must be operational • Recommended for odd number of nodes • No shared storage required

  8. Node and Disk Majority • Disk is included in majority vote • Can loose half of the nodes as long as quorum is online • Can loose the quorum connection if over half of the nodes are online

  9. Node and File Share Majority • Share is included in majority vote • Can loose half of the nodes as long as file share is online • Can loose the file share connection if over half of the nodes are online

  10. No Majority • Quorum disk must remain online • Hosts can fail as long as quorum remains online • If quorum fails and all hosts are online, the cluster fails

  11. Fall-backs Storage space Management Over subscribing Expensive equipment Unexpected maintenance and failure

  12. Virtualization platforms VMware workbench ESXI Hyper-v XenServer

  13. VMWare Cons ESXi includes drivers so is large and reduces support Has been exploited Difficult management Best Live Migration (i.e., moving running VMs from one host to another) (VMotion cost!) ESX Server 3.5 is limited to 128 active VMs Pros Completely Free* No hardware-based virtualization required (Virtualizes a VM) Best Live Migration (i.e., moving running VMs from one host to another) (VMotion cost!) Quick setup Less host system requirements (busyBox)

  14. Hyper-V Pros Hyper-v has small micro-kernel that reduces attack surface and size. Better quorum migrations No additional cost - Free**

  15. Hyper-V Only hardware-based virtualization (e.g., Intel-VT or AMD-V), and virtualization must be enabled in the BIOS. Live Migrations can fail catastrophically May result in cloned VM's, missing VM's, Corrupt VM's Increased overhead cost for hardware Long setup and a lot of management infrastructure MSSQL, SCVMM, SCCM, SCOM, DPM, DC01, DC02, WSUS

  16. Hyper-v Each Host requires: fail-over clustering iSCSI HIT File services Hyper-v Group policy management BITS MPIO Hyper-v tools fail-over clustering tools Storage manager for SANs Windows backup tools Command line tools Remote server administration tools (distributed file system tools)

  17. Network Support • Networking and layout • Storage • MPIO • Management network