ML
    • Recent
    • Categories
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Dell PERC Question (Server Down)

    Scheduled Pinned Locked Moved IT Discussion
    255 Posts 17 Posters 155.7k Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • BRRABillB
      BRRABill @Dashrender
      last edited by

      @Dashrender said

      Changing the array doesn't required a reboot. You should be able to do that on the fly.
      So if you are hitting off a SD or USB you could attach to iDrac and then to the controller software, then manage the array, all while XS is up and running.

      The RAID options are very limited from the iDRAC.

      Looks like I will need to install OMSA on the XS.

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

        @BRRABill said in Dell PERC Question (Server Down):

        @Dashrender said

        Changing the array doesn't required a reboot. You should be able to do that on the fly.
        So if you are hitting off a SD or USB you could attach to iDrac and then to the controller software, then manage the array, all while XS is up and running.

        The RAID options are very limited from the iDRAC.

        Looks like I will need to install OMSA on the XS.

        Limited, sure. But limited beyond what you really need to do?

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

          @Dashrender said

          Limited, sure. But limited beyond what you really need to do?

          It's hard to say at this point.

          Most of what I have had to do is deal with foreign config on the array/disk, but ONLY after a cold boot. So, it's never been something I could look into.

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

            @BRRABill said in Dell PERC Question (Server Down):

            @scottalanmiller

            Got it.

            So we're really just trying to avoid rebooting.

            Exactly, because if the server is still functional in any way (rebuilding) then rebooting puts the data at risk.

            DashrenderD 1 Reply Last reply Reply Quote 0
            • DashrenderD
              Dashrender
              last edited by

              Once you move to booting not off the array, you should have to cold boot much amnymore, unless the drives require it to come back online

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

                @scottalanmiller said in Dell PERC Question (Server Down):

                @BRRABill said in Dell PERC Question (Server Down):

                @scottalanmiller

                Got it.

                So we're really just trying to avoid rebooting.

                Exactly, because if the server is still functional in any way (rebuilding) then rebooting puts the data at risk.

                Thanks, so I wasn't crazy for saying that last night.

                scottalanmillerS BRRABillB 2 Replies Last reply Reply Quote 1
                • scottalanmillerS
                  scottalanmiller @Dashrender
                  last edited by

                  @Dashrender said in Dell PERC Question (Server Down):

                  @scottalanmiller said in Dell PERC Question (Server Down):

                  @BRRABill said in Dell PERC Question (Server Down):

                  @scottalanmiller

                  Got it.

                  So we're really just trying to avoid rebooting.

                  Exactly, because if the server is still functional in any way (rebuilding) then rebooting puts the data at risk.

                  Thanks, so I wasn't crazy for saying that last night.

                  You aren't crazy for saying that.

                  DashrenderD 1 Reply Last reply Reply Quote 0
                  • BRRABillB
                    BRRABill @Dashrender
                    last edited by

                    @Dashrender said

                    Thanks, so I wasn't crazy for saying that last night.

                    Did I call you crazy? If so, I apologize. I know I was GOING crazy. 🙂

                    Not really dealing with this stuff a lot, I was trusting DELL tech support to know what they were doing.

                    Their take is to let is build to like 5%, and then it is perfectly safe to reboot.

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

                      @scottalanmiller said in Dell PERC Question (Server Down):

                      @Dashrender said in Dell PERC Question (Server Down):

                      @scottalanmiller said in Dell PERC Question (Server Down):

                      @BRRABill said in Dell PERC Question (Server Down):

                      @scottalanmiller

                      Got it.

                      So we're really just trying to avoid rebooting.

                      Exactly, because if the server is still functional in any way (rebuilding) then rebooting puts the data at risk.

                      Thanks, so I wasn't crazy for saying that last night.

                      You aren't crazy for saying that.

                      Never said I wasn't crazy in general.😂

                      1 Reply Last reply Reply Quote 0
                      • BRRABillB
                        BRRABill
                        last edited by

                        I mean, in theory, the array has instructions for rebuilding, right?

                        It has a plan of what to d, block by block. It just pauses on reboot.

                        Now, if you unplugged it, yeah I could see an issue there.

                        But isn't it possible it is smart enough to just pick back up?

                        1 Reply Last reply Reply Quote 0
                        • DashrenderD
                          Dashrender
                          last edited by

                          Sure it is, but it is still a risk. And I've luckily never had to reboot while replacing a drive, different problem from you, so this has never come up fort me. My systems just stay up and running.

                          1 Reply Last reply Reply Quote 1
                          • BRRABillB
                            BRRABill
                            last edited by

                            I did a few Google search. It seems like other places (including Adaptec) also say rebooting a rebuilding array is perfectly safe.

                            Not arguing with anyone, just questioning why the people making the RAID hardware seem to think it is OK, but ML does not.

                            http://blog.adaptec.com/2015/05/13/a-technical-issue-regarding-raid-buildrebuild/

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

                              @BRRABill said in Dell PERC Question (Server Down):

                              I did a few Google search. It seems like other places (including Adaptec) also say rebooting a rebuilding array is perfectly safe.

                              Of course they do, you are reading their marketing.

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

                                VMware advocates moving running workloads around, too. But you should fire anyone who did it in production based on that recommendation. I've seen people do that thinking that they would not get caught because "Vmware said it was safe" and brought down a bank because of it (hint: it wasn't safe.)

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

                                  @scottalanmiller said in Dell PERC Question (Server Down):

                                  @BRRABill said in Dell PERC Question (Server Down):

                                  @scottalanmiller said

                                  That means that the PERC has failed. That's a different issue.

                                  Are we back to that?

                                  I mean, it's definitely on the table. Just not sure why all of a sudden you think that's so likely.

                                  Because you said that it was rebuilding. The PERC should remain up and viable even without disks attached to it. You can continue to manage it online through the iDRAC or a VM that isn't using those drives.

                                  You do not manage Dell PERC through iDRAC or a VM.

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

                                    @scottalanmiller said in Dell PERC Question (Server Down):

                                    @BRRABill said in Dell PERC Question (Server Down):

                                    I did a few Google search. It seems like other places (including Adaptec) also say rebooting a rebuilding array is perfectly safe.

                                    Of course they do, you are reading their marketing.

                                    I've done it many times over the years and never once had a failure. Yes it is a risk, but it is also adding downtime waiting for a rebuild to happen.

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

                                      Do you mean that the OMSA can't manage the PERC?

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

                                        Does this not work for the iDRAC?

                                        http://en.community.dell.com/techcenter/extras/m/white_papers/20438108/

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

                                          @scottalanmiller said in Dell PERC Question (Server Down):

                                          Do you mean that the OMSA can't manage the PERC?

                                          The iDRAC is not OMSA they are different.

                                          scottalanmillerS 1 Reply Last reply Reply Quote 0
                                          • JaredBuschJ
                                            JaredBusch
                                            last edited by

                                            OMSA can do things.

                                            0_1461942333840_upload-fb5ada1a-9b6f-4708-b301-18cbbadd8d29

                                            1 Reply Last reply Reply Quote 0
                                            • 1
                                            • 2
                                            • 9
                                            • 10
                                            • 11
                                            • 12
                                            • 13
                                            • 11 / 13
                                            • First post
                                              Last post