Re: SAS5/E with MD1000 for JBOD
On Thu, Dec 17, 2009 at 4:22 PM, Philip Tait phi...@subaru.naoj.org wrote: On 12/17/2009 11:39 AM, Jose-Marcio Martins da Cruz wrote: Philip Tait wrote: We want to attach an MD1000 to a PE2900 in a non -RAID configuration. The Dell sales people are very convinced that we have to have a PERC6/E to connect an MD1000, but they are doing further research. We have two MD1000 attached to a PE2950. We have a PERC5/E. With the PERC5/E you can have RAID 0 (stripe). So, if I understood what you're wanting, you shall be able to create one RAID 0 volume for each disk, or a single RAID0 for all disks. Thanks for the response, but I believe this would not work for our application because the disks would require a PERC-equipped computer for them to be readable. We want these drives to be readable on any PC with a SATA interface. Honestly (an maybe someone can correct me) I don't think it is possible. I have pretty much never found a way to connect drives with a PERC5/E and MD1000 or even connected directly to a PERC5/i for that matter that doesn't add Dell mojo in between. The best solution we found was to buy multiple PERC cards, save the configs once we had everything like we wanted it (doing RAID 0 on the hard drives to fake JBOD), and then loading that config on other machines to be backups. Still, if the MD1000 went out, we still might be up a creek. Although I generally love Dell hardware, it is one drawback I have found to the MD1000 and PERC cards is that they want their Dell specific voodoo in between. We have even found that just buying drives for a third party vendor will seem to work sometimes, but often lead to flakiness. Apparently they all have to be matched drives with Dell firmware on the drives themselves to be fully supported (or at least that is what we have been told). Anyway, I hope you have better luck that we have. Preston ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: SAS5/E with MD1000 for JBOD
On Fri, December 18, 2009 15:25, Preston Hagar wrote: On Thu, Dec 17, 2009 at 4:22 PM, Philip Tait phi...@subaru.naoj.org wrote: On 12/17/2009 11:39 AM, Jose-Marcio Martins da Cruz wrote: Philip Tait wrote: We want to attach an MD1000 to a PE2900 in a non -RAID configuration. The Dell sales people are very convinced that we have to have a PERC6/E to connect an MD1000, but they are doing further research. We have two MD1000 attached to a PE2950. We have a PERC5/E. With the PERC5/E you can have RAID 0 (stripe). So, if I understood what you're wanting, you shall be able to create one RAID 0 volume for each disk, or a single RAID0 for all disks. Thanks for the response, but I believe this would not work for our application because the disks would require a PERC-equipped computer for them to be readable. We want these drives to be readable on any PC with a SATA interface. Honestly (an maybe someone can correct me) I don't think it is possible. I have pretty much never found a way to connect drives with a PERC5/E and MD1000 or even connected directly to a PERC5/i for that matter that doesn't add Dell mojo in between. The best solution we found was to buy multiple PERC cards, save the configs once we had everything like we wanted it (doing RAID 0 on the hard drives to fake JBOD), and then loading that config on other machines to be backups. Still, if the MD1000 went out, we still might be up a creek. Although I generally love Dell hardware, it is one drawback I have found to the MD1000 and PERC cards is that they want their Dell specific voodoo in between. We have even found that just buying drives for a third party vendor will seem to work sometimes, but often lead to flakiness. Apparently they all have to be matched drives with Dell firmware on the drives themselves to be fully supported (or at least that is what we have been told). I guess you can't connect one of these with a plain SAS controller and have the drives presented as plain physical drives? You could do that with the old SCSI Powervaults. ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: SAS5/E with MD1000 for JBOD
Philip Tait wrote: We want to attach an MD1000 to a PE2900 in a non -RAID configuration. The Dell sales people are very convinced that we have to have a PERC6/E to connect an MD1000, but they are doing further research. We have two MD1000 attached to a PE2950. We have a PERC5/E. With the PERC5/E you can have RAID 0 (stripe). So, if I understood what you're wanting, you shall be able to create one RAID 0 volume for each disk, or a single RAID0 for all disks. In the meantime, I wondered if anyone on the list is actually using a SAS5/E to attach an MD1000, and can relate their experience? (Note that we want the drives to have standard partitioning, which would seem to make a PERC6/E unsuitable for this application.) Thanks for any comments, Philip J. Tait http://subarutelescope.org ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq -- ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: SAS5/E with MD1000 for JBOD
On 12/17/2009 11:39 AM, Jose-Marcio Martins da Cruz wrote: Philip Tait wrote: We want to attach an MD1000 to a PE2900 in a non -RAID configuration. The Dell sales people are very convinced that we have to have a PERC6/E to connect an MD1000, but they are doing further research. We have two MD1000 attached to a PE2950. We have a PERC5/E. With the PERC5/E you can have RAID 0 (stripe). So, if I understood what you're wanting, you shall be able to create one RAID 0 volume for each disk, or a single RAID0 for all disks. Thanks for the response, but I believe this would not work for our application because the disks would require a PERC-equipped computer for them to be readable. We want these drives to be readable on any PC with a SATA interface. In the meantime, I wondered if anyone on the list is actually using a SAS5/E to attach an MD1000, and can relate their experience? (Note that we want the drives to have standard partitioning, which would seem to make a PERC6/E unsuitable for this application.) Thanks for any comments, Philip J. Tait http://subarutelescope.org ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
