RAID - another hard drive So whatever is written on one...

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RAID stands for "Redundant Arrays of Independent Disks", the idea behind RAID was to combine multiple small inexpensive disk drives into an array of disk drives that yields performance. Basically combining multiple drives into a single drive which could improve performance. Depending on the type of RAID level you choose the way it improves performance is by using the multiple drives as one drive making seek time shorter. The problem with RAID is when one drive fails the RAID system fails. Now there are different levels of RAID which do different things I will cover the most common. RAID-0 breaks up the multiple hard drives into stripes making data seek time shorter. This level is used by users seeking the best performance. The only problem is there is no fault-tolerance. RAID-1 this level in my opinion provides the best protection. It basically makes a mirror copy of
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Unformatted text preview: another hard drive. So whatever is written on one hard drive is mirrored onto another. So if one drive fails you will have an exact copy of it. RAID-5 is striped across three or more drives and uses parity checking, so that is one drive fails, the other drives can recreate the data stored on the failed drive. This level increases performance, volume capacity and provides fault tolerance. RAID can be created different ways. One is if it is your motherboard supports RAID then you just install the software and follow the steps. The other method is purchasing a RAID controller card. The other way is based on what version of Windows you are using and you can change your hard drives from basic disks to dynamic disks. 1 1 All information was taken from the "Guide to Managing and Maintaining Your PC" Fifth Edition...
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This note was uploaded on 02/29/2012 for the course AASISA TB145 taught by Professor ?? during the Winter '12 term at ITT Tech Pittsburgh.

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