Re: Supermicro SAS controller
On Thu, 03 May 2012 16:30:00 +0000, Camaleón wrote:
<snipped>
> In brief, yes, that card seems one of those you can consider to be
> "safe" enough to don't have many problems :-P
This sounds very good :-)
>>> Mmm, yes. I can't tell for that specific model but LSI is a good
>>> manufacturer for HBA solutions and also linux-friendly, at least
>>> that's what I've heard :-)
>>
>> Yes, I hope I won't have any problems with them. Especially because
>> they too promise SuSE and Red Hat support but only have a Debian 5
>> driver on their homepage.
>>
>> But since the hwraid page shows good support for MegaRAID cards I'm
>> optimistic :-)
>
> At this point, let me share my own experience with hardware RAID cards
> because "not all that glitters is gold" :-)
>
> This is an own-made list I did of things one should take into account
> for hardware RAID cards:
>
> 1/ The driver is included in the kernel (you will avoid many problems)
This seems to be the case.
> 2/ The card's manufacturer provides a set of CLI tools (also GUI/web
> based) to control all of the aspects of the RAID volume (from array
> creation/modification/reconstruction/rebuilding/deletion/on-the-fly
> volume expansion/current array status... up to firmware update, if
> possible)
Didn't find any infos about that :-?
> 3/ The manufacturer is enough linux-friendly so that in the event of a
> problem you can contact them with no regrets :-)
Hope I don't have to find out about that ;-)
Btw: Wouldn't it be better to use software raid? In case of failure of
the controller I would need to get exactly the same card again?
Or if I ever want to exchange the mainboard and use one with a SAS
controller onboard?
>>> Mmm, yes, there's something strange there. Ah, I think I got it :-)
>>>
>>>> $ sudo lspci | grep Marvel
>>>> 01:00.0 RAID bus controller: Marvell Technology Group Ltd.
>>>> MV64460/64461/64462 System Controller, Revision B (rev 01)
>>>
>>> This can be the motherboard SATA 2 controller.
>>>
>>>> 02:00.0 RAID bus controller: Marvell Technology Group Ltd.
>>>> MV64460/64461/64462 System Controller, Revision B (rev 01)
>>>
>>> This can be the SAS add-on card.
>>
>> I think they probably are the two SAS cards
>
> I also thought so, but it cannot be that way :-)
>
> (note the add-on card is SATA 2 -and thus 3 Gbps- while one of the
> embedded ports is rated at 6 Gbps and there's only one port listed that
> features the 6 Gbps speed)
>
>>> Does this make more sense? Yes, exact numbers do not match but this
>>> can be due to a simple identification problem ("update-pciids" could
>>> solve this).
>>
>> I did update-pciids but the numbers didn't change. But anyhow they are
>> the same as on the debian wiki pci database. Or what numbers don't
>> match?
>
> I wouldn't bother about that. Maybe is just the chipsets are still not
> listed at the upstream PCI ID database.
Ok, I already forgot :-)
Thanks for all your help and advices!
Ramon
Reply to: