Sunday, January 9, 2022

Week 4 Posting - Genesis Perez

 Get Paid with RAID

    Raid stands for Redundant Array of Independent (or Inexpensive) Disks. This is a method that combines multiple disk drives into a single unit for data storage and fault-tolerance. Array means two or more drives working as a unit. In addition to that, RAID's main purpose is to ensure data redundancy and improved performance. There are three types of RAID; mirroring, striping, and disk duplexing. Mirroring is the process of using two drives top hold the same data, which is good for safety; if one drive fails, the other drive will continue to run the data. However, just because it's safe, doesn't mean it's fast. Striping is making two drives act as one drive by spreading data across them, which is useful when it comes to speed. However, if one of the drive fails, all the data from both drives are lost. This method is not recommended for sensitive data or important projects . It is not worth risking for speed. Lastly, disk duplex is considered to be the fastest and safest since one controller does not write each piece of data twice. Each drive are on separate controllers and the system will continue to operate even if the primary drive's controller stops working. Through these methods, RAID implementations between software and hardware should be considered. Software RAID functions with the operating system of the machine. It can use regular SATA controllers to make a software RAID array. One of the few disadvantages is that it tends to overwork the OS, causing slow processing. The other implementation is hardware RAID. It functions with the physical controller or card, which handles are the RAID features. It relies more on speed and data redundancy. Out of the two, hardware RAID is the most expensive but offers better reliability.

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