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Acronis Estimates Excessive, - SOLVED

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Windows 10 - 1TB Drive - About 56GB used. When Acronis Begins to backup, 5 minutes elapse before any backup begins. As the backup nears the end, it will note that 75GB os so is backed up. The Backup time usually starts at 3 hours, and reduces to 1 hour or so, when the backup ends. The backup takes about 30 minutes and backs up 56 GB.

Same thing for Incremental - 5 minutes elapse, waiting for something to start. Says it is backing up 6 or 7 GB, but actual is 500MB, and backup time is actually about 1-2 minutes after the 5 minute lag.

Other users experience this behavior ?

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There are obviously a lot of factors that will influence the performance figures that you have described.

For the initial time lapse, that will be time that the Microsoft Volume Shadow Copy Service takes to create an initial snapshot of the volume being backed up, assuming this is an initial full backup given you say it was about 56GB used.

The time estimate is something that I have seen quite often where the starting time estimate is very high but then this comes down significantly as Acronis is able to better calculate it based on actual data transfer rates from the system to the destination backup drive.

For incremental images, there still has to be time for MS VSS to create the snapshot, then further time is required in order to compare changes between the current system and the system as it existed at the time of the last full backup, then there is the difference in the amount of data compared versus the final backup image size which may very well equate to the two values you quotes, i.e. 6 - 7GB of data compared but only 500MB of actual data saved that was changed since the last full backup image.

Yes, take the backup times with a grain of salt.  Different drives will behave differently as well.  A speedy SSD with plenty of space (used for the backup location), will often peform a more realistic timeline of the backup, but not always.  Even in Windows, if you are copy and pasting a single large file, you'll see it's pretty fast.  However, copy and paste a folder with several subdirectories and small files in it that's roughly the same size as that 1 big file and it will 1) be much slower and 2) the transfer rate will fluctuate all over the place in most cases. 

Acronis is not only backing up a combination of large and small files (many of which are nested in folders upon folders), but it is also reading the source data, converting it into proprietary format, writing it to another type of media and compressing it along the way.  If you have a network hare, or spinning drives, or hybrid drives - you will get more inconsistency with the backup time.  I use an SSD for my main drive and another internal SSD for backups and it basically shows and takes less than 10 minutes for a full 70Gb backup in almost every case.  When I run the same backup to an external USB 3.0 drive with a 7200 spinner, it is not just much slower, but the time fluctuates much more too.