Software for Syncing/Mirroring External HDDs?

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Shaina11

Shaina11

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Apr 23, 2014
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So here's my situation. I have two 2 TB bare HDDs that I use externally, connected to my laptop via SATA to USB adapters, one is the main storage drive, and the other is the backup drive.

What I'm hoping to find, is some software that would allow me to mirror the files and changes on the main storage drive to the backup drive in a RAID 1 fashion. Preferably one that could monitor files when the backup drive is not online and keep track of deleted, created, moved, and renamed files and folders and sync them to the backup drive when it comes back online. And alternately, I'd like to use the same software to select specific folders to sync from the drives to a flash drive as well, so all my storage methods are pretty automated and in sync so I don't have to constantly go around copy and pasting several files, and remembering every little thing I changed as it becomes a headache quickly.

Does anyone have any suggestions? Thank you for taking the time to read this, I appreciate it.
 
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USAFRet

USAFRet

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Mar 16, 2013
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FreeFileSync does this.
https://www.freefilesync.org/

It also has a function for RealTimeSync.
"The primary purpose of RealTimeSync is to execute a command line each time it detects changes in one of the monitored directories or when a directory becomes available"
 
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Shaina11

Shaina11

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Apr 23, 2014
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Thanks for the suggestion USAFRet, though I just thought of a scenario and I wonder if the software would be able to detect it. If say, I have a group of files or folders synced to a flash drive, and I use that drive on another computer without the software installed, and I rename and move various files and folders, would FreeFileSync be able to detect which files were moved and renamed accurately and sync it accordingly? It just seems like there could be room for error unless it pops up dialogues to confirm changes to you.
 
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USAFRet

USAFRet

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Well, if you had the RealTimeSync running, and it detected that flash drive and its folders, and if that were in the setup to sync...presumably, it would 2-way sync with whatever folder you designated on the internal drive.

Yes, this could probably be hazardous.

Possibly you could cause it to do it in only one direction.
I've not played with it enough to say.

It is a free tool.
Try it with some non critical data.
See what happens.
 
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