Windows 8.1 System Image Backup

I have 2 questions about Windows 8.1's System Image Backup:I run this command: wbadmin start backup -allCritical -vssFull -quiet -backupTarget:E:
1. Why does this backup take 36% more space than the data on source disk? (Acronis backup takes much less.)
2. I find data of only one backup while the command is supposed to do incremental backups as well. How to do backup of more than one day?

Thanks.

AK



For number 1, Acronis may be using compression in a different way to wbadmin.

For number 2, there is a good explanation in the following Microsoft thread. It talks about Windows 8 doing full backups. Have you tried providing more space and backing up to a different location?

https://social.technet.microsoft.com/Forums/windowsserver/en-US/3aed5ebe-7ad8-4b03-a948-ef064237db08/incremental-and-full-backups-using-wbadmin-and-task-scheduler-in-server-2008-r2?forum=windowsbackup



For number 1, Acronis may be using compression in a different way to wbadmin.

For number 2, there is a good explanation in the following Microsoft thread. It talks about Windows 8 doing full backups. Have you tried providing more space and backing up to a different location?

https://social.technet.microsoft.com/Forums/windowsserver/en-US/3aed5ebe-7ad8-4b03-a948-ef064237db08/incremental-and-full-backups-using-wbadmin-and-task-scheduler-in-server-2008-r2?forum=windowsbackup



1. So Microsoft cannot do compression, while Arconis can. Disappointing and surprising.
2. I looked thru that thread about Win2008-R2 backup. It has so many postings and no clear cut solution that I could discern. My target disk has plenty of space for incremental (more than 30%) but not for another full. No, I have not tried a different location.



For Windows Backup you need enough space for ALL the backups or it will not do them all. So that is your answer here: Provide more space.

Consider backing up to a Large USB Hard Drive (2 TB or more). That should definitely allow more backups.



What do you mean by "ALL the backups"? Is there a fixed number? If there is room for one Full and 3 Incremental backups, then those 3 should be done, right?
Are you sure the command I am using, or any other command, would do incremental backups?
I will try a larger disk in a few days.



I think if you allow room for 3 backups, it should do them all and identify by time/date and possibly name.

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