[Linux-PowerEdge] Fault Tolerant disk arrays and device-mapper-multipath

Dan Yasny dyasny at gmail.com
Thu Mar 14 04:50:35 CDT 2013


You might want to see if the Dell provided software is a better match, but
I haven't touched it in years


On Thu, Mar 14, 2013 at 11:47 AM, Nick Lunt
<nick.lunt at patech-solutions.com>wrote:

>
> Hi Dan
>
> yes it makes sense to me too. Reading the multipath docs for RH6 it seems
> it's also easier to setup now than it has been previously.
>
> Thanks for your help.
>
> Nick .
>
>
> [image: Nick Lunt | Applications DBA Patech Solutions Limited Tame House,
> Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T:: +44(0)1543 444
> 707 | M:: +44(0)7554 003 634 E:: Nick.Lunt at Patech-Solutions.com W::
> http://www.patech-solutions.com]
>
>
> On 14 March 2013 09:39, Dan Yasny <dyasny at gmail.com> wrote:
>
>> With four paths in place, device-mapper absolutely makes sense to use.
>> Haven't touched the newer MDs in a SAS configuration (I mostly use iSCSI),
>> but I think they will work the same way - using scsi_dh_rdac
>>
>>
>> Dan
>>
>>
>> On Thu, Mar 14, 2013 at 11:37 AM, Nick Lunt <
>> nick.lunt at patech-solutions.com> wrote:
>>
>>> Hi
>>>
>>> we are purchasing an R910 which we will install Oracle Linux 6 on. The
>>> server will have 4 x SAS HBA cards which will connect to an MD3220, this in
>>> turn will be daisy chained to 3 x MD1220 and an MD1200.
>>>
>>> We will be setting these up in a fault tolerant configuration.
>>>
>>> My question is with this configuration is it necessary to also setup
>>> device-mapper-multipath ?
>>>
>>> Thanks
>>> Nick .
>>>
>>> [image: Nick Lunt | Applications DBA Patech Solutions Limited Tame
>>> House, Wellington Crescent, Fradley Park, Lichfield, WS13 8RZ T::
>>> +44(0)1543 444 707 | M:: +44(0)7554 003 634 E::
>>> Nick.Lunt at Patech-Solutions.com W:: http://www.patech-solutions.com]
>>>
>>> _______________________________________________
>>> Linux-PowerEdge mailing list
>>> Linux-PowerEdge at dell.com
>>> https://lists.us.dell.com/mailman/listinfo/linux-poweredge
>>>
>>>
>>
>
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