How to backup a NAS box???

SelfGovern,
  I invite you to please read the following whitepapers/studies:
http://www.usenix.org/events/fast07/tech/schroeder.html

http://www.usenix.org/events/fast07/tech/schroeder.html

You will find, what veterans have suspected since the late 90's, there is little difference in failure rates between the different disk technologies and classes.  While the Vendor makes a difference in the types of failures observed.  I recommend the Hitachi drives as far as performance and failure they've been phenomenal for me ever since they were known as IBM DeathStars.

Consumer RAID technologies are actually nearly every bit as sound as enterprise storage array solutions hardware wise which is why everyone is working on the software end of file system and block level snapshot/auto-layout/replication feature sets.

Anacreo, single drive failure rates may not be significantly different.   But... there are difference in how einterprise and consumer drives boot, and how they respond to the controller.   Experts Exchange and other similar sites are littered with stories of people who have used consumer-grade disks in RAID environments and found out only when one drive fails, that the others have been having certain errors that had not been discovered until too late.  

This wouldn't be as big a deal, but some people think they don't need to back up their data because it's on RAID 5 (or mirrored, or whatever).   Oooops.

Thank you for the info.  I'll have to read it again later today.  BTW, this NAS will be used on a very small network that consist of three workstations.  The main purpose is to store their graphics files.  Currently they have their files scattered over the network on different work stations and nothing is being backed up.  Insane, I know!  Simply looking to centralized and backup everything as cheap as safely possible.  Thanks.

Total size of graphics is currently 1.3 gig.  This is way I was thinking 3TB x 2

Well the drobo wins on Sexiness...

For media and graphics definitely check out ReadyNAS plugins and cloud backup features.

Having backups directly on NAS cuts down on failure points and is perfect for a serverless environment.

Plugins such as DLNA will let you pipe images right to handheld and tvs without additional configuration.

You know I hadn't really looked into the ReadyNAS plugins (but now I'm considering one for home, talked myself into it)...

This basically gives you your own Web Photos service, not too shabby looking.

http://www.youtube.com/watch?feature=player_embedded&v=iIF8ozMLWbk#!

This and the ReadyDLNA I do see having real world office value add, depending on the type of business.

Thanks again everyone.  Lots of info to run with.  :)