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    RAID - CompTIA A+ 220-1001 Prof Messer

    IT Careers
    raid storage prof messer comptia a+ youtube video training certification it career it training
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    • scottalanmiller
      scottalanmiller last edited by

      Prof Messer gets this very, very wrong yet again, he says that if you need performance you use hardware RAID, but this is extremely basic and it's been a full twenty years since hardware RAID wasn't as fast as software RAID. Getting this wrong now, or just repeating the A+ getting it wrong, is way past the point where you can just claim to not have known. That's some seriously wrong information. It shows how much the A+ is vendor supported and how willing they are to say anything to sell some hardware.

      1 Reply Last reply Reply Quote 1
      • scottalanmiller
        scottalanmiller last edited by

        Oh, he's saying block in the images. That's "block" in a generic sense, just a "widget" of data. It's in the billions or trillions for a normal RAID array.

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        • scottalanmiller
          scottalanmiller last edited by

          RAID 5 - he gets something very wrong. He said that even when data is lost, you have complete redundancy. This is completely wrong. If one drive is lost, you still have access to the data, but there is zero redundancy.

          Dashrender 1 Reply Last reply Reply Quote 0
          • Dashrender
            Dashrender @scottalanmiller last edited by

            @scottalanmiller said in RAID - CompTIA A+ 220-1001 Prof Messer:

            RAID 5 - he gets something very wrong. He said that even when data is lost, you have complete redundancy. This is completely wrong. If one drive is lost, you still have access to the data, but there is zero redundancy.

            wow.... /sigh.

            1 Reply Last reply Reply Quote 0
            • scottalanmiller
              scottalanmiller last edited by

              I'm still shocked that they updated the test, but still don't mention either:

              a) UREs, the single biggest risk factor for RAID
              b) RAID 6, one of the most important levels

              1 Reply Last reply Reply Quote 1
              • H
                Harry Lui last edited by

                SAM, can I just copy and paste your comments on their youtube page?

                scottalanmiller travisdh1 2 Replies Last reply Reply Quote 1
                • scottalanmiller
                  scottalanmiller @Harry Lui last edited by

                  @Harry-Lui said in RAID - CompTIA A+ 220-1001 Prof Messer:

                  SAM, can I just copy and paste your comments on their youtube page?

                  LOL, sure.

                  1 Reply Last reply Reply Quote 0
                  • travisdh1
                    travisdh1 @Harry Lui last edited by

                    @Harry-Lui said in RAID - CompTIA A+ 220-1001 Prof Messer:

                    SAM, can I just copy and paste your comments on their youtube page?

                    Now that could be entertaining, but more likely horrific.

                    1 Reply Last reply Reply Quote 1
                    • H
                      Harry Lui last edited by

                      Posted.

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                      • brianwinkelmann
                        brianwinkelmann @steve last edited by

                        Interesting but also I get confused with all the comments XD

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