software comparison

Richard    Mar 14 11:05AM 2017 GUI

Can you outline advantages if your software over Arq and qBackup: https://www.qualeed.com/en/qbackup/?

Thanks


gchen    Mar 14 11:45AM 2017

Our biggest advantage over Arq, or any other backup software, is the ability to take advantage of cross-computer deduplication. If you have many computers sharing a similar set of files (such as a large code base) then with Duplicacy these computers can back up to the same storage folder -- deduplication occurs across computers. With Arq you'll have to use a separate storage folder for each computer.

Duplicacy also supports more cloud storages than Arg, the most notable being Backblaze B2.

qBackup seems to be quite primitive at this moment and lacks many features (for instance, no built-in scheduler). They don't provide any documentation on how their deduplication works so I can't comment on this aspect.


Richard    Mar 14 1:55PM 2017

Thanks. I just ran a test with Duplicacy, and while the backup was indexing the drive, I was seeing hundreds of these messages.

14:51:10.887 Failed to read the symlink: The system cannot find the file specified.


gchen    Mar 14 2:42PM 2017

Is this on Windows? Can you run Duplicacy as administrator to see if this is a permission issue.

Unfortunately this log message doesn't include the file path. I'll fix it in the next update.


Richard    Mar 14 2:47PM 2017

Yes, on Windows 2012 R2 and running as Admin. But, I'm also using Windows native dedup at the drive level so wondering if something odd is happening there.


gchen    Mar 14 2:56PM 2017

I see. Each deduped file is actually a reparse point, but Duplicacy can only handle reparse points that are a symlink or a mount point. For others it returns ENOENT.

I think the solution is to treat dedup reparse points as if they are regular files. I'll fix it.


Richard    Mar 14 3:03PM 2017

Thanks. BTW - if you install and text qBackup, I think you'll find the interface to be slicker than Duplicacy. And there can be multiple jobs. Schedule is done via command line and task scheduler so seems to work fine. I don't work for this company, but I've been testing it and others.

R


gchen    Mar 15 10:18AM 2017

Version 1.2.1 fixed this deduplication reparse point issue.

As for our GUI, we have a different design rationale -- we wanted to have a simple configuration page that does most basic things. For advanced users there is a CLI version that is more powerful and more flexible.


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