Section 11 - Backup / Restore Windows System (WBAdmin)

This section describes in details how to backup and restore Windows System with OBM (MS Windows System backup Module).

11.2 Requirements and recommendations

Please ensure that the following requirements or recommendations are met by the backup client computer:




• Please ensure that the following requirements or recommendations are met by the backup client computer:
• OBM is installed on the computer to be backed up.
• Sufficient disk spaces are required for the temporary storage volume of the System backup.
• It is recommended to have free disk space of 150% x Total In-use Size of all volumes selected for backup.
• The following Windows Features are installed on the client computer:


• Windows Server Backup
• Command line Tool
• Windows PowerShell


• Limitations on the temporary directory:



Please refer to the following Help Centre article for details. 1.6 Restriction on the temporary storage location for the Windows system state and system backup?




• It is recommended that the temporary directory be configured on a local drive.
• The Microsoft Windows System backup module (wbadmin start backup) uses the .vhd format for writing backups. The current virtual hard disk 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.



The maximum source volume size of a System backup is limited to 2088958 MB, roughly 2 TB.

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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