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 Raid 0 and falut tolerant

Author  Topic 

Ling
Starting Member

4 Posts

Posted - 2009-03-17 : 18:46:23
Hi All,

As we know Raid 0 does not provide fault tolerant, but how comes if Raid 0 has 2 disks?

I got the question from TestKing, volume E Raid level is RAID-0, Disk size is 2x20GB, the transaction log must be stored on a fault-tolerant volume, and the answer is to store transaction log in volume E.

I am confused about this, does that mean if Raid-0 has 2 disks, it can provide fault tolerant? hope someone can help.

Thanks a lot,
Ling

robvolk
Most Valuable Yak

15732 Posts

Posted - 2009-03-17 : 20:56:18
RAID-0 is not only not fault tolerant, it has a higher risk of failure than other RAID types. The data is striped across the available disks, so you get the fullest capacity of the drives. However, if a single drive fails, the data cannot be reconstructed from the remaining drives.

If this was a test, the tester is either an idiot, or they didn't review their answers.
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