how reliable is raid 0
As Neil Jones said:
One drive dies, the entire array is effectively dead and the data is lost.
Raid 0, (From the OS's point of view) extends two drives into One long Logical drive.
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Raid (0+1) is raid 0, with mirroring.
Takes:
2- 500GB drives (looks like a 1TB drive)
2- 500GB drive that will mirror the above 2 drives
If either of the Raid 0 drives fail, the second set will take over. (The mirrors)
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Raid 5
Takes 3 500GB drives
Data is being written to all three, in a round robin fashion. along with a parity bit.
If one drive fails, the system keeps going.
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The difference between raid 0+1 and raid 5, the amount of discs required and speed.
Raid 5 is a little slower, because it has to write the parity.
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If you really want stability and the ability to change the dead drive on the fly.
Raid 5, with hot swap.
Requires:
Hot swap drive cabinet
Hot Swappable Drives.
Requires 3 drives, same as Normal raid 5, plus one for the hot swap.
If a drive fails, system keeps going, and rebuilds the data using the parity information to the hot swap.
Once the hot swap has been rebuilt the dead drive can be removed and replaced,then reconfigured as the new hot swap.
Your MotherBoard supports any of these configurations.
Edited by isimaster, 10 March 2009 - 10:09 PM.