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    Mirror spinning disk to SSD?

    Scheduled Pinned Locked Moved IT Discussion
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    • DustinB3403D
      DustinB3403
      last edited by

      You can do so, the only issue is the mirror will only operate as fast as that mechanical drive.

      So it'll be slow.

      gjacobseG 1 Reply Last reply Reply Quote 2
      • gjacobseG
        gjacobse @DustinB3403
        last edited by

        @DustinB3403 said in Mirror spinning disk to SSD?:

        You can do so, the only issue is the mirror will only operate as fast as that mechanical drive.

        So it'll be slow.

        I agree -- It will be as fast as it's slowest part... But as long as it is:

        • equal in size
        • same interface

        It should be perfectly fine.

        K 1 Reply Last reply Reply Quote 0
        • Deleted74295D
          Deleted74295 Banned
          last edited by

          Yes it will work and be fine.

          The dumb thing is that HPE would waste a 1TB SSD at triple the price when a mechanical would be fine.

          1 Reply Last reply Reply Quote 1
          • Mike DavisM
            Mike Davis
            last edited by

            If it actually is two SSDs they will be worth more than the server they are going in. (It's a little HPE microserver.)

            wirestyle22W 1 Reply Last reply Reply Quote 2
            • wirestyle22W
              wirestyle22 @Mike Davis
              last edited by

              @Mike-Davis said in Mirror spinning disk to SSD?:

              If it actually is two SSDs they will be worth more than the server they are going in. (It's a little HPE microserver.)

              Great 😄

              1 Reply Last reply Reply Quote 0
              • K
                Kris_K @gjacobse
                last edited by

                @gjacobse said in Mirror spinning disk to SSD?:

                @DustinB3403 said in Mirror spinning disk to SSD?:

                You can do so, the only issue is the mirror will only operate as fast as that mechanical drive.

                So it'll be slow.

                I agree -- It will be as fast as it's slowest part... But as long as it is:

                • equal in size
                • same interface

                It should be perfectly fine.

                Replacement drive can be bigger (not that it's going to use that space).

                gjacobseG 1 Reply Last reply Reply Quote 0
                • gjacobseG
                  gjacobse @Kris_K
                  last edited by

                  @Kris_K said in Mirror spinning disk to SSD?:

                  @gjacobse said in Mirror spinning disk to SSD?:

                  @DustinB3403 said in Mirror spinning disk to SSD?:

                  You can do so, the only issue is the mirror will only operate as fast as that mechanical drive.

                  So it'll be slow.

                  I agree -- It will be as fast as it's slowest part... But as long as it is:

                  • equal in size
                  • same interface

                  It should be perfectly fine.

                  Replacement drive can be bigger (not that it's going to use that space).

                  Quite right,.. thanks for pointing that out. To early in the day, Not enough coffee.

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

                    If HPE is the one doing the part swap, you can be pretty sure it will work. Of course, they've not had the best track record with 3PAR as of late. But I digress. But the new drive in any RAID array must be equal or larger. Equal is a real thing, you can't round. So 1TB of SSD needs to be not "close enough to call it 1TB" but actually equal or bigger.

                    1 Reply Last reply Reply Quote 3
                    • KOOLERK
                      KOOLER Vendor @Mike Davis
                      last edited by

                      @Mike-Davis said in Mirror spinning disk to SSD?:

                      I had an HPE drive fail in a server under warranty. I don't have the drive in hand yet, but the field tech told me that the replacement drive is a 1TB SSD. The old drive was a 1TB mechanical. The drives were mirrored.

                      Can I swap out a HDD for a SSD, let it mirror and then swap out the other HDD? I know in general you want the drives to be identical, and everything will slow down to the HDD, but since it's for a one time mirror, it seems like it could work.

                      You'd better run your workload on SSD and use HDD as a backup destination. Mirroring SSD + HDD isn't going to make anybody any good: speed of a fleet is limited with a slowest ship in it (read - HDD in our context).

                      1 Reply Last reply Reply Quote 3
                      • Mike DavisM
                        Mike Davis
                        last edited by

                        So HP shipped Enterprise HDDs instead of the desktop labeled drives they had in there from the factory. It took a few hours to mirror each drive and it was totally uneventful. - which is exactly what you're looking for in these types of things.

                        1 Reply Last reply Reply Quote 3
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