Backup Strategies for Hyper-V
Chris Henley,
Veeam Software
http://www.veeam.com/blog
Twitter: @NerdyLikeThat @Veeam @HyperVBear
How Hyper-V Works (Architecture)
Parent VM
Child VM
Child VM
Drivers
Drivers
Virt
Stack
Drivers
Hypervisor Hyper-V
Hardware
What’s In a Hyper-V VM?
.VHD/.VHDX
Config.xml
Snapshots.avhd
Binary files
Hyper-V Virtual Machine
The VSS Process
VSS Requestor
Hyper-V VSS
Writer
Volume Shadow
Copy Service
Virtual Machine
VSS Writer
Got my image! What now?
 Changed Block Tracking
 Forward Incremental
 Increment injection
 Synthetics
 Reversed Incremental
Changed Block Tracking
Parent VM
Child VM
Child VM
Drivers
Drivers
CBT
Virt
Stack
Drivers
Hypervisor Hyper-V
Hardware
Tracking Block Changes in VM’s
1001 0011 1010
0011 1101 1110
0001 1111 1011
1110 0101 1001
1010 1111 1111
0110 0111 1000
CBT
.ctp
.vib
Incremental Backup
VM
CBT
Full.vbk
.vib
.vib
.vib
.vib
Injection
1001 0011 1010
0011 1101 1110
0001 1111 1011
1110 0101 1001
1010 1111 1111
0110 0111 1000
CBT
.ctp
.vib
Full.vbk
Synthetics
VM
CBT
.vib
.vib
Full.vbk
.vib
.vib
Sun
Mon
Tues
.vib
Synthetic
Full.vbk
Wed
10
Reversed Incremental
VM
CBT
.vib
.vib
.vib
Full.vbk
.vrb
Full.vbk
.vrb
Full.vbk
.vrb
Sun
Mon
Tues
Wed
11
Further Reducing RPO and RTO
 Continuous Data Protection
 Near Continuous Data Protection
 Replica’s and Replication
How Replication Works
Source
Hyper-V Host
CBT
.vib
VM
.vrb
.vrb
VM
The reason we do backup: Recovery
 Restore Operations
 Instant VM recovery
Full.vbk
.vhd
VM
Summary
 Hyper-V VM’s are more than just a single file.
 VSS Enables the Hyper-V Backup Process.
 Software Innovation Extends Backup and Restore
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