The presentation I gave at PubForum Dublin 2009 on Hyper-V R2

12. 1.
2. Copy memory pages from the source to the target via Ethernet
3. Final state transfer
a) Pause virtual machine
b) Move storage connectivity from source host to target host via Ethernet
4. Run new VM on target; Delete VM on source
Host 1 Host 2
Blue = Storage
Purple = Networking
Shared Storage

13. Configuration
State

18. Guest Virtual Guest Virtual
Guest OS Address Address
Shadow page
defines GVA-to- tables combine
GPA mappings these mappings
Guest Physical because the
Address processor knows
Hypervisor how to perform
defines GPA-to- only one level of
SPA mappings System System translation
Physical Physical
Address Address

21. Parent Partition VM1 VM2
Virtual Machine Switch
Routing TCP/IP TCP/IP
VLAN Filtering
Data Copy Port 2 Port 1
VM NIC 1 VM NIC 2
Miniport
Driver
VM BUS
NIC
Ethernet

23. Parent Partition VM1 VM2
Virtual Machine Switch
Routing TCP/IP TCP/IP
VLAN filtering
Data Copy Port 2 Port 1
VM NIC 1 VM NIC 2
Miniport
Driver
Default
Q1 Q2 Queue VM BUS
Switch/Routing unit
NIC
Ethernet