Date: Fri, 28 Oct 2011 12:57:58 -0200 From: Eduardo <sathler90@gmail.com> To: Sergio de Almeida Lenzi <lenzi.sergio@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS on Dell with FreeBSD Message-ID: <CADPo_jvRDE%2Bn4XKx7w_Y4h=TQCLPVh=1CohMGQBRS0GEVfUaMA@mail.gmail.com> In-Reply-To: <1319038571.43689.13.camel@z6000.lenzicasa> References: <20111019141443.GQ4592@pcjas.obspm.fr> <CAG-7A%2BDPDa3ru5NpM4uzrbC-fAvJQs5r21KB_z0nKg9mKUGX1g@mail.gmail.com> <1319038571.43689.13.camel@z6000.lenzicasa>
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On Wed, Oct 19, 2011 at 1:36 PM, Sergio de Almeida Lenzi <lenzi.sergio@gmail.com> wrote: > I have several dells with the perc controller > and I can say that the best solution is > to user raid 0 (see both disks) and let > zfs to mirror them.. > > This works ok, and you can use the zfs tools to > manage the disks. > > Howerver this does not solve the problem that I > had with the perc controller.. Hi, I have one observation regarding a similar situation ... if I am using the perc to create a mirror of the 2 boot disks (using UFS) ... and the perc crashes / die or gets replaced ... I use to think that I could boot from the individual disk ... since in this case the data is there and does not need the perc to see it .... is this correct ? or you think that I will not be able to boot the system ? (or even if it is not the boot disk ... I should be able to mount one of the drives anyway... ) Thanks! > The problem is that all the storage you have is > in the perc controller, even it is reliable, when > it "breaks", all of your storage (and so the computer...) > is useless. =A0You cannot move the drives (HD) to another > machine because the "normal" =A0controller (ad, ada) will > not recognize the disk. > > Even if you have a spare perc controller of the same kind > at hand (and I bet you do not have...) =A0the disks are > "signed" =A0by the other (the broken) controller =A0and so > will not be recognized by the new controller. > > In my case I had to call dell support, and only after > several hours I could put the HD =A0online again. > > I mount only one disk (of the zfs pool) in the new > controller, and even with the dell support in the phone > the new controller wipe out the disk. > A new call (with a different dell support) was able to > re-initialize the disk, that includes re-install Freebsd... > and after that "attach" the old disk, and using zpool detatch, > followed by zpool attach (the old disk), it than reconstruct > the mirror... =A0resulting in almost 6 hour downtime > and a loss of one day working for the hole company. > > Now, a dell support (here) does not attend you =A0if you say > that the OS is FreeBSD, you must say to them that you are > installing Linux... to get the support. > > Conclusion: =A0 now I prefer the IBM 32XX series... > > Ok > that is my story > > > Sergio. > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" >
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