Section 14 - Backup / Restore Microsoft Virtual Machines

This section describes in detail how to backup and restore virtual machine running on Microsoft Hyper-V Server with OBM.

14.2.1 Requirements and recommendations

Please ensure that the following requirements are met by the Hyper-V server:




• OBM version 6.13 or above is installed on the Hyper-V server.
• The Hyper-V management tools are installed on the Hyper-V server.
• Consider increasing the JVM (Java Virtual Machine) memory allocation to improve performance of the backup operation.
• It is recommended that the temporary directory have disk space of at least 50% of the largest sized virtual machine to be backed up.
• For backup of virtual machine with snapshot, backup of the whole VM instead of individual disk is highly recommended.
• The current virtual hard disk (VHD) specification limits the size of a virtual hard disk to be 2040 GB (2 TB), which can fit a volume of size 2040 GB minus 2 MB.



For details, please refer to:

http://blogs.technet.com/b/ranjanajain/archive/2010/03/23/virtual-hard-disk-vhd-architecture-explained.aspx
http://technet.microsoft.com/en-us/library/dd183729%28v=ws.10%29.aspx





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