Large incremental backups

Many of my incremental backups are almost as large as the full backups when I have not added any new data to speak of. In the attached example, the last incremental is 25% of the full backup, while some are much smaller.
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I've got a related question ... I too have seen where sometimes the incremental is large next to some of the other ones (typically something like 2-5% 'normal' day-to-day, then it will bump up to 20-25%).
I've just finished re-installing ATI2015 so I could mount the backups, I was hoping I would see only the files that were actually backed up in the incrementals, but regardless of which one I mount I see the complete folder structure and all of the files???? So what am I not getting?
Thanks,
Denis.
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Dennis, welcome to these public User Forums.
Sorry but there is no method of seeing just the files backed up in any incremental backup.
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Bummer, makes trying to figure out what the activity is that is causing so much data to appear new!
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Defragging HDDs will cause larger incremental backups when the sector occupied by data is changed (even if the data itself has not changed); behaviour of SSDs is different - the Trim process does not change the sector in which data is located. There is limited defragmentation of SSDs but I cannot say to what extent that involves data being moved to different sectors - it may be less pronounced that is the case with HDDs.
OS updates and driver updates can also cause such bumps.
Ian
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it's an external drive, holds only 'user' data ... so must be something I am doing
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