Raid Research Essay

The word RAID stands for redundant ray of light of independent disks. wear out is usually expendd in environments with servers or at a business with vauntingly file servers, transaction of application servers, where data accessibility is critical, and fault security deposit is demand. There be 8 types of raids, Raid 0 is technically not a raid train because it offers no fault tolerance but, it operates by providing data stripping which takes the information and spreads it out over all the disk totes. However, if oneness drive fails than the entire raid fails. Raid 1 is also referred to as disk mirroring it basically takes the information from one disk and stores it on multiple disks, this is great for fault tolerance because if one disk fails the information is on another disk. The only drawback to raid 1 is data access speed and the cost because there are more disks involved. Raid 5 is considerably the most commonly used Raid take plainly because it provides both strippi ng and parity. The parity block is distributed to all of the drives making it easier to access the information or bring forth a balanced access load.The parity in raid 5 is used if one of the drives happens to fail, to go back that drive which makes the raid 5 the most common however the only drawback to this raid level is that it has a relatively slow write cycle. Lastly, RAID level 6 which is very similar to raid level 5 but provides two parity functions rather than just one. A minimum of four disks is required to create RAID level 6. Raid level 0, even though it offers no redundancy, is still of use mainly to those who use applications that require high bandwidth such as data streaming or pic editing software. Raid level 0 is also used because its most simple to implement. Raid level 1 is most expensive because it requires more disks to implement. It also requires heavy software manipulation and constellation to implement Raid level 1. If I were to purchase raid it would abso lutely be raid level 0 simply because its easy to implement and it would be efficient for my personal usage.