Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

My wireless router comes with a USB connector which allows me to plug an external hard drive in and it'll act as a Network Attached Storage. The problem is that I want to backup this hard-drive to the external drive of another computer so that if the NAS drive fails, I don't lose everything.

However, Windows 7 Backup refuses to include the NAS as a location to backup. I can't fool it by mapping it to a drive letter either. Google presents lots of pages on how to backup files to a NAS, but not the other way around.

Can anyone advise me on free software which can do incremental backups of a NAS drive to an external drive attached the computer it is running on? I'm aware of this question but the top answers have one or more of the following issues:

  1. They aren't free.
  2. The free version cannot backup a NAS.
  3. They cannot do incremental backups.
  4. They're just a script and therefore have limited other functionality (eg. disk space management, scheduling, compression, etc.etc.)
share|improve this question

2 Answers 2

up vote 2 down vote accepted

At the moment, the (free) backup solution I recommend to people is Cobian Backup.

It should hopefully meet your needs.

edit -

it is on that list on the other question. What did you find wrong with it?

share|improve this answer
I didn't see anything on the website or documentation detailing backing up a NAS to a local disk - however it sounds like I may have overlooked it. Will look again, thanks. –  Richard Jan 18 '11 at 12:06
@Richard - it can do pretty much anything - ftp/windows shares and more, so you can backup to a NAS anyway you want! //nasname, map to a drive or more... –  William Hilsum Jan 18 '11 at 13:44

Snapshot http://www.drivesnapshot.de is my favorite program to do what you are asking for, but it is not free. I use it all the time, and it runs at about $50

I think crashplan may be able to do what you are looking for - but I haven't tried them. http://b3.crashplan.com/consumer/crashplan.html

The link to do what you are looking to do with crashplan is http://support.crashplan.com/doku.php/recipe/back_up_windows_mapped_drives

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.