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What exactly does RAID do?

CaptainBill

Senior member
Topic says it all...I know what it stands for but I don't understand what it does and what it's advantage's are? Thanks in advance
 
Redundent Array of Inexpensive disk...

Well thare is 2 big advantages...... one is obviously redundency......you still have that data mirrored on mirror drive ...this happens in RAID(1) (sorry if i get it wrong)
The other one is what is called drive stripping... where u span on logical drive across multiple drives......This speeds up I/O coz if u span the disk array across the two drive you write every alternative bit of data onto each drive......ie, u spend half the time writing onto each of the disk......think this is called RAID 0 ........
you can do both at the same time and its called RAID 10 ?...

The advantages of Raid lies when data redudency is critical and down time is not acceptable......like Servers......or where I/O latency is a issue........

 
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