The Sarge firmly believes that bigger is better. A big stick is better than a small stick; a big tank is better than a small tank. Does the same apply to drives? We've got 1TB drives now, thanks to perpendicular recording, and that technology should allow for drives of up to 5TB in the future.
Other drive geeks have said that using the same model (stacking to more than 1 level) will allow for a 50TB drive down the road.
Sarge wants to know who out there is comfortable with a 5TB drive, let alone a 50TB drive? Think RAID5 will protect you from a drive failure? Maybe you also think that the Sarge can't disable a man with a ham sandwich!
Well guess what? RAID5 won't protect you with larger drives, and the Sarge can absolutely disable a man with any type of sandwich.
The point is, you need dual parity RAID protection (also known as RAID6) when you are using a storage array with larger drives, simply because the larger drives take too long to rebuild.
If you have old arrays that only have RAID5 capability, better check out someone that can steer you in the right direction. That's an order!
At ease.
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