Virtualization with Windows
at CERN
Juraj Sucik, Emmanuel Ormancey
Internet Services Group
CERN IT Department
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Agenda
• Current status of IT-IS group virtualization service
• Server Self Service
• New virtualization features in Windows Server 2008
(Hyper-V)
• What next?
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Virtualization in IT-IS
• 17 physical servers running Virtual Server 2005
• 45 virtual servers with different OS
– Windows XP
– Windows Server 2003
– Linux (SLC3, SLC4)
• Used for production, development and test
environments
–
–
–
–
–
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Terminal servers
Media archive jobs
Media streaming
Compilation platform
Test platform for pilot services
Virtualization with Windows at CERN
Server Self Service
• Service for managing virtual servers based on
Virtual Server 2005
• Choose from a set of “predefined” images
–
–
–
–
Windows server 2003
Windows Server 2003 + IIS + Soap + Streaming
Windows Server 2003 + Terminal Server Services
Scientific Linux SLC 4
• Install from PXE or from a Boot CD ISO image
• Available within 10 minutes
• SOAP API available (start, stop, create a new one,
edit VHD, etc)
• Performance – satisfying
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Server Self Service Center
• Examples
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Select an OS, type in the duration
and click Request. 10 minutes
later, the user will receive an email
notifying that his server is
available.
Virtualization with Windows at CERN
Virtual Server 2005 Features
32-bit Virtual Machines
Yes
64-bit Virtual Machines
No
Multi Processor Virtual Machines
No
Virtual Machine Memory Support
3.6GB per VM
Managed by System Center Virtual
Machine Manager
Yes
Support for Microsoft Clustering Services
Yes
Host side backup support
Yes
Scriptable / Extensible
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Yes, COM
User Interface
Web Interface
Cost
Free download
Virtualization with Windows at CERN
Hyper-V
• New hypervisor-based virtualisation platform
in Windows Server 2008
• Component of Windows Server 2008
– Standard, Enterprise and Datacenter Editions
• Hardware requirements:
– 64-bit processor
– Hardware assisted virtualisation (AMD-V or Intel
VT)
– Hardware enabled Data Execution Prevention
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Virtual Machine Manager
Hosted virtualisation
Guest 1
Host OS
Hypervisor virtualisation
Guest 2
VMM
Guest 1
Guest 2
VMM
Hardware
• VMware Workstation,
VMware (GSX) Server,
Fusion.
• Parallels Desktop
• (Linux) KVM
• Microsoft Virtual PC,
Virtual Server
Hardware
• VMware ESX (Server),
ESXi (3i)
• Xen
• Hyper-V
Virtualization with Windows at CERN
Hyper-V Architecture
Provided by:
Parent Partition
VM
Worker
Processes
ISV/IHV/OEM
Child Partitions
Hyper-V
Operating System
Microsoft/Citrix (XenSource)
Applications
Applications
Applications
Windows Server
2003/2008
Non-hypervisor
Aware OS
Xen-enabled
Linux Kernel
User Mode
WMI Provider
VM Service
Windows Server
2008
Windows
Kernel
VSP
Windows
Kernel
Linux
VSC
VSC
IHV
Drivers
VMBus
Kernel
Mode
VMBus
VMBus
Emulation
Hyper-V
Hardware
Hypercall Adapter
Ring -1
Hyper-V Features
• 32-bit and 64-bit virtual machines
• Large memory support (>32 GB) within VMs
• Multi-processor VMs
• Integrated cluster support for quick migration and HA
• Volume shadow service integration for data protection
• Pass-through disk access for VMs
• Virtual machine snapshots
• New hardware sharing architecture (VSP/VSC/VMBus)
• Robust networking: VLANs and network load balancing
• Windows Management Interface (WMI) management interface
• Support for full or server core installations
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Virtual Server 2005 vs. Hyper-V
Virtual Server
Hyper-V
32-bit Virtual Machines
Yes
Yes
64-bit Virtual Machines
No
Yes
Multi Processor Virtual Machines
No
Yes, up to 4 core
Virtual Machine Memory Support
3.6 GB per VM
>32 GB per VM
Managed by System Center Virtual
Machine Manager
Yes
Yes, in next
version (2008)
Support for Microsoft Clustering
Services
Yes
Yes
Host side backup support
Yes
Yes
Yes, COM
Yes, WMI +
HyperCall API
User Interface
Web Interface
MMC 3.0
Cost
Free download
Windows Server
2008
Scriptable / Extensible
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Hyper-V High Availability
• Providing solutions for both planned and
unplanned downtime
• Planned downtime
– Quickly move virtualized workloads to service
underlying hardware – “Quick Migration”
– More common than unplanned
• Unplanned downtime
– Automatic failover to other nodes (hardware or
power failure)
– Not as common and more difficult
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Quick Migration
1. Save state
•
Save entire VM state
2. Move virtual
machine
•
Move storage
connectivity from
origin to destination
host
VHDs
SAN Storage
3. Restore state and
run
•
•
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Restore VM and run
Done
Network Connectivity
Virtualization with Windows at CERN
Summary
• Hyper-V
– Microsoft’s new enterprise virtualisation platform
– Hypervisor in the operating system
– More powerful VMs allow to virtualise more physical
servers
– New features with scriptable API
– Quick Migration
• Server Self Service will be reviewed and upgraded
to Hyper-V in order to provide a robust virtualization
service with API allowing a full scriptable solutions
for batch processing needs (grid nodes, media
archive nodes, etc)
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN
Questions?
CERN IT Department
CH-1211 Genève 23
Switzerland
www.cern.ch/it
Virtualization with Windows at CERN