CERN IT Department CH-1211 Genève 23 Switzerland t Evolution of virtual infrastructure with Hyper-V Juraj Sucik, Slavomir Kubacka Internet Services Group CERN IT

CERN IT Department CH-1211 Genève 23 Switzerland t Let’s continue…  Microsoft Virtual Server  Hyper–V 2008  SCVMM Sep  Hyper–V SCVMM 2008 R2

CERN IT Department CH-1211 Genève 23 Switzerland t Hyper-V Features 3 Hypervisor feature of WS and 64-bit virtual machines Up to 4 CPUs per VM Max 32 GB of memory per VM Snapshots Failover clustering Scriptable interface

CERN IT Department CH-1211 Genève 23 Switzerland t SCVMM 2008 Features 4 Enterprise management solution Windows Powershell API V2V and P2V capabilities Web portal Intelligent placement Library and templates Delegated management roles Job history Support for highly available VM VM Migration

CERN IT Department CH-1211 Genève 23 Switzerland t Hyper-V Infrastructure 5

CERN IT Department CH-1211 Genève 23 Switzerland t System Architecture 6 Microsoft Virtual Machine Manager Windows Powershell SOAP Services Virtual Machine Manager Admin Console Virtual Machine Manager Admin Console CERN Virtual Infrastructure Web Interface CERN Virtual Infrastructure Web Interface Backups OS Maintenance LAN DB Application Management 6

CERN IT Department CH-1211 Genève 23 Switzerland t CERN Virtual Infrastructure 7

CERN IT Department CH-1211 Genève 23 Switzerland t CERN Virtual Infrastructure 8

CERN IT Department CH-1211 Genève 23 Switzerland t Enhancements

CERN IT Department CH-1211 Genève 23 Switzerland t Hyper-V 2.0 Features Live migration Cluster Shared Volume (CSV)  Enables multiple nodes in a cluster to access a single shared LUN  Dynamic I/O redirection Network optimizations TCP/IP Traffic in a VM can be offloaded to a physical NIC on the host computer Processor compatibility mode Allows live migration across different CPU versions within the same processor family 10

CERN IT Department CH-1211 Genève 23 Switzerland t Hyper-V 2.0 Features Logical Processor Support  Support for 32 logical processors on host computer Hot Add/Remove Storage  Add and remove VHD disks to a running VM without requiring a reboot Second Level Translation (SLAT) Leverage new processor features to improve performance and reduce load on Windows Hypervisor Better SMP support for Linux 11

CERN IT Department CH-1211 Genève 23 Switzerland t SCVMM 2008 R2 Features Manage WS 2008 R2 Hyper-V Live Migration Detects if Live migration can be done Maintenance mode Placement of new VM not allowed Existing VMs migrated off or saved Multiple VM per LUN using CSV Supports CSV feature of HV 2.0 V2P feature 12

CERN IT Department CH-1211 Genève 23 Switzerland t SCVMM 2008 R2 Features SAN related enhancements Promote non-HA VM to HA VM by migrating it to a clustered host, and vice versa to “demote” the VM Network optimizations If enabled, VMM will configure the VM to use VMQ or Chimney, if available on the host Rapid provisioning Avoids copying VHD from library VDI integration 13

CERN IT Department CH-1211 Genève 23 Switzerland t Why Migration? Maintenance reasons Load balancing Green IT Fast migration SOAP interface 14

CERN IT Department CH-1211 Genève 23 Switzerland t Live Migration No dropped network connections No perceived loss of service Clustered Shared Volumes facilitates LM Leverages Failover Clustering 15

CERN IT Department CH-1211 Genève 23 Switzerland t Quick vs. Live Migration Quick Migration (Windows Server 2008 Hyper-V) Host 1 Host 2 1. Save state Create VM on the target Write VM memory to shared storage 2. Move virtual machine Move storage connectivity from source host to target host via Ethernet 3. Restore state & Run Take VM memory from shared storage and restore on Target Run 16

CERN IT Department CH-1211 Genève 23 Switzerland t Quick vs. Live Migration Live Migration (WS08R2 Hyper-V) Host 1 Host VM State/Memory Transfer Create VM on the target Move memory pages from the source to the target via Ethernet 2. Final state transfer and virtual machine restore Pause virtual machine Move storage connectivity from source host to target host via Ethernet 3. Un-pause & Run

CERN IT Department CH-1211 Genève 23 Switzerland t VMware vs. Hyper-V R2 AspectvSphere 4Hyper-V R2 # CPU core64 Memory1TB2TB # nodes in cluster3216 # virtual CPU84 # guest per host Virtual memory256GB64GB Hot-add diskYesSCSI only VM moveLive # of snapshots3250 HA via clusteringYes Market share44%23% Source: Login, USENIX Magazine, Oct

CERN IT Department CH-1211 Genève 23 Switzerland t Hyper-V Linux VM RHEL supported as guest OS Open source drivers (GPL) in CPU Benchmark 19

CERN IT Department CH-1211 Genève 23 Switzerland t Linux in VM Time synchronization  Kernel parameters, e.g. notsc divider=10 Virtual serial console Admin privileges 5 Linux templates 20

CERN IT Department CH-1211 Genève 23 Switzerland t Consolidation vs. batch 21 AspectService consolidation Batch virtualization Scale (machines)~ 100~ 1000 CPU usageLittleHigh HardwareReliableCheap ServicesCriticalNon-critical MigrationLiveNot required VM life timeLongLimited

CERN IT Department CH-1211 Genève 23 Switzerland t ELFms Integration 22 Microsoft Virtual Machine Manager Windows Powershell SOAP Services Virtual Machine Manager Admin Console Virtual Machine Manager Admin Console Perl SOAP client HMS AIMS Lemon Perl SOAP client HMS AIMS Lemon Backups OS Maintenance LAN DB Application Management 22

CERN IT Department CH-1211 Genève 23 Switzerland t Experiment use case VOBox service – dedicated servers for experiments: 222 and growing rapidly! 23

CERN IT Department CH-1211 Genève 23 Switzerland t CC Virtualization Future Consolidation of servers on critical power supply as the power is very limited Development resources for IT-FIO 24

CERN IT Department CH-1211 Genève 23 Switzerland t What’s next? CERN fabric management integration  LEAF  Lemon  Quattor  SLS Integrate Hyper-V drivers with SLC Rapid provisioning 25

CERN IT Department CH-1211 Genève 23 Switzerland t Virtual Desktop Infrastructure 26 OfficeComputer Centre Thin Client PC Blade PCs Terminal Services Cluster Hyper-V servers with Virtual Desktops Connection Broker

CERN IT Department CH-1211 Genève 23 Switzerland t VDI Use Cases 27 Propose Virtual Desktop self service  for experiment developers  as an alternative to dual-boot  as an alternative to Terminal Services Evaluate a thin client technology, which could be solution for  public computers  basic office users Jack PC Thin Client

CERN IT Department CH-1211 Genève 23 Switzerland t Conclusion Latest editions of Hyper-V + SCVMM in production Better Linux support Live migration Integration with CERN IT services  Fabric management tools Visit our website CERN Virtual Infrastructure:

CERN IT Department CH-1211 Genève 23 Switzerland t Virtual Desktop Infrastructure 29

CERN IT Department CH-1211 Genève 23 Switzerland t Quick vs. Live Migration Quick Migration (Windows Server 2008 Hyper-V) 1. Save state  Create VM on the target  Write VM memory to shared storage 2. Move virtual machine  Move storage connectivity from source host to target host via Ethernet 3. Restore state & Run  Take VM memory from shared storage and restore on Target  Run Live Migration (WS08R2 Hyper-V) 1. VM State/Memory Transfer  Create VM on the target  Move memory pages from the source to the target via Ethernet 2. Final state transfer and virtual machine restore  Pause virtual machine  Move storage connectivity from source host to target host via Ethernet 3. Un-pause & Run Host 1 Host 2 Host 1 Host 2 30

CERN IT Department CH-1211 Genève 23 Switzerland t SOAP method calls 1)Request VM 2)Delete VM 3)Start VM 4)Stop VM 5)Save State of VM 6)Migrate Virtual Machine Request (Create) / Delete Migrate Save State Start / Stop 31