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Moving disks from internal to external - Does it create a new backup file

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I recently moved four hard drives from inside my computer to an external enclosure.  The enclosure is connected to the computer via USB 3.0.  The drive letters and drive names are identical to what they were when the drives were inside the case.

I have Acronis (v2014) set to do a weekly incremental backup of data on Monday mornings.  The program launched this morning, as it should.  It began backing up the data as normal.  

The amount of differential data from last week to this is minor.  The backup routine should take very little time to complete.  It is; however, taking a great deal of time and, according to the status monitor in the program, slated to take another 20+ DAYS to complete.  I know that's not an accurate estimate, it's just what the program is calculating.

Having moved the physical location of the drives, will that initiate an entirely new backup of the data even though the drive letters/names are the same?  Is Acronis 'seeing' these disks as entirely new and starting with a complete backup of the data?  

Thanks.

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Robert, from your description above I would agree that ATI looks to be creating a new Full backup image for your 4 moved drives.  I would suspect that the reason for this is that more than just the drive letters is involved and ATI has detected that these drives are connected via a completely different interface method and thus have been given new / different unique drive identifiers because of this change from internal to external location.

Normally I would expect ATI to have given an error for this type of move and required that you reselect the Source for this backup task, and this may be what you have already done unless ATI 2014 did not show this behaviour that we see in later versions.

Hi Steve,

There was no error message.  The program seemed to recognise the drives and started the backup process.  

If it is going to act as though the drives/data are completely new, then I'll have to start from scratch and delete my old backup file sets.

Robert, the log for the backup task should hold more information of what is actually happening here, so probably worth checking before cancelling anything.

If you can't access the log via the GUI then open C:\ProgramData\Acronis\TrueImageHome and look from there for any service_... log files with todays date in the sub-folders.

It indicates "writing incremental version to file."  

Honestly, starting with a clean backup isn't a bad idea anyway.  Data gets deleted regularly (photographs) and the deleted data just clogs up the backup files.  I typically do a clean backup from fresh once a year anyway, and it was due in about another month, or 6 weeks.