The drives are reliable so far. One is a WD Caviar black - the other a WD Green. Each has a back up, Samsung and WD Green respectively hooked up via a disk caddy over USB2 and Carbon Copy Cloner. So would I go for RAID 0 and maintain a back up rather than RAID level 1 which would half my space?
The thunderbolt enclosures are fairly pricey. Any idea who sells a good one?
I use a 6TB Pegasus RAID at work and it is really good - but it did cost £1K which is way over my budget.