I would be tempted to get your users to use the backup device to store their data on rather than their local hard drive, although really its still not very resilient in terms of backing up data. You could schedule an NTbackup job on each pc to take copies of the documents and settings folder on each pc (which includes the my documents folders, favourites and most other user specific settings). This would minimise the amount of data passed down to the NAS box.
Think for example what would happen if a flood/power spike took out all the electrical equipment in the building. Most small businesses with that level of data resiliency would go under purely for the fact they had lost all their data and had no way of retrieving it. I understand that small businesses may not be able to afford an expensive solution but just a bog standard server with tape drive should be sufficient in this context, then you can keep your tape off site.(put it this way, the business cant afford a backup solution but can they afford to be without a backup!)
dear Roope ,
i know of your situation – i’ve had it before.
the problem lies within your linksys.
take a crossover cable or a USB cable and connect the computer directly to the NAS device and try copying again.
it will work perfectly i assure you.