Backup & Recovery

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  • 1.  VDR Recovery Process

    Posted May 28, 2011 07:53 PM

    Hi

    If i perform a backup of a VM with VDR,, first time it will take full backup and from next time it will do incrementals, same goes if we use Veeam backup software.

    My question is do i need all the disks which are backedup earlied. First full then all the incremental-day01, incremental-day02, incremental-day03. what if i lost incremental-day02.



  • 2.  RE: VDR Recovery Process

    Posted May 28, 2011 08:05 PM

    To first answer your question. Yes, you will need all incremental backups made since the last full backup.

    Incremental backups are commonly used to reduce backup space and time, since only the changes since the last backup are backed up. On the other side, the restore process may take a longer time.

    André



  • 3.  RE: VDR Recovery Process

    Posted May 28, 2011 08:23 PM

    Thanks for your response

    sorry if my question is silly.

    Can you please clear me, It implies to Image level backups ? (VMDK files) or you were talking about file level backups.



  • 4.  RE: VDR Recovery Process
    Best Answer

    Posted May 28, 2011 08:37 PM

    VDR as well as Veeam, vRanger and other backup applications are doing image backups. They either use their own logic or - in current versions - leverage VMware's CBT (Changed Block Tracking) to identify modified data blocks within the vmdk files which need to be backed up.

    However, an incremental backup is the same for image and file backups, only the latest changes are backed up.

    André