[clug] forget RAID?

[Ben]

"one array drive failure means a much higher likelihood of another
drive failure."

"Further, these results validate the Google File System's central
redundancy concept: forget RAID, just replicate the data three times.
If I'm an IT architect, the idea that I can spend less money and get
higher reliability from simple cluster storage file replication should
be very attractive."
http://storagemojo.com/?p=383

So (not being overly knowledgeable in this are) what does this mean in
practical terms?

I currently have two servers on site - one backup and one web server.
Both have 2x200GB HDDs in software RAID1.

What sort of system should I setup to apply "cluster storage file
replication" or is RAID1 the most sensible option for my environment?

Is it as simple as making a backup server with 3HDDs, and setting up
some sort of automatic copying between them, rather than using RAID1?
- I'm not sure how this would help the problem noted in the article.
Or would I create two partitions on each drive, and copy hda1 to hdb2,
and hda2 to hdb1, for instance?

Ben