Question to some of the storage pros Options

[Harkonnen]

I've decided to get this 4-bay drive enclosure or the cheaper non-raid variant.

The most cost-effective thing I can think of is to fill it with four 1.5TB WD Green power drives, running independently for a total of 6TB (5.5TB NTFS).

Or run it in RAID5 and fill it with four 1TB enterprise/raid-edition drives for extra speed and data protection. However, I've heard RAID5 isn't fool proof on rebuilds and having nearly 50% of the space seems like a huge tradeoff. (I'd need to get 1TB drives as I've heard the WD green drives don't work in RAID and I'm never buying Seagate again).

Thoughts? Any opinions would be great.

I don't really need speed so much as space and protection.

[neon]

8x WD10EACS and 4x WD15EADS drives that i own say greenpowers work fine in raid. (8x1TB on a highpoint 2320, and 4x 1.5TB on a highpoint 2300). 4x 1.5TB in raid, your looking at 4.09TB. You loose the space of 1 drive to redundancy. Keep in mind that raid is not a backup solution. I simpily use raid 5 because I love having large volumes, rather than single disks.

Not sure what that enclosure would be like, but for $350, it would be either software raid, or very cheap hardware raid.