So I have more thoughts & info after our big & informative WHS, RAID, Carbonite/Mozy, etc discussion.
I subscribed to Carbonite. Thought it was awesome at first. Now I find that it doesn't seem to "easily find" new files. Perhaps it's my error, but ...
Second, I became sold on WHS and was ready to set up a system with it.
Third, I just got a new Windows 7 Ultimate system and discovered Windows Backup. Seems like a Eureka moment to me ... I have my 2TB Mirror Edition MyBook hanging off a USB port and have Windows Backup scheduled to run once each day.
1. Simple & Cheap
2. Seemingly does the job (ie backs up the data in case a drive goes bad)
3. No additional system/server/hardware to setup, run, and burn electricity
1. A fire or similar catastrophe would destroy all my data
(solution: occasionally rotate thru a couple external HDs and store one offsite)
2. Older Windows OS's don't have this apparently robust version of Windows Backup.
3. Doesn't back up other computers in the house
(though it apparently can back up networked Win 7 machines)
4. Can't access it remotely & thus share data offsite
(that's not really a backup issue)
Summary is I think I'm going the route of a scheduled Windows Backup to an external hard drive that will only cost me the price of an external My Book, and alleviate the need for an additional WHS machine.