From the course: CompTIA A+ (220-901) Cert Prep: 2 Core Hardware

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RAID overview

RAID overview

- A long time ago, a bunch of very groovy professors in Berkeley, California came up with a thought and the thought was as hard drives get bigger and bigger and bigger, is there a benefit of using a bunch of hard drives that act, bark, smell, taste like one drive as opposed to using just one physical drive and the answer is yes. This process, which we call RAID or random array of independent devices, is based on the premise that it's better to have a lot of littler drives that act like a big drive than one big drive. The two benefits are speed and data safety. Now, you can combine speed and data safety in a lot of different ways and as a result of that they create what are known as RAID levels and they go from RAID 0, one, two, three, four, five, six, one plus zero, zero plus one, RAID 10, RAID 7, there's a bunch of different RAIDs. What I want to do is just cover the RAID versions that are actually on the A exam, which I completely agree are the most important ones. So to appreciate…

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