SAS 5/iR raid migration

Ben Tisdall ben.tisdall at photobox.com
Thu May 20 08:50:35 CDT 2010


Thanks Patrick.

On Thu, May 20, 2010 at 2:39 PM,  <Patrick_Boyd at dell.com> wrote:
> Correct. Reconfiguration is supported by the PERC series of controllers only (with the exception of the PERC H200).
>
> -----Original Message-----
> From: Ben Tisdall [mailto:ben.tisdall at photobox.com]
> Sent: Wednesday, May 19, 2010 7:26 PM
> To: Boyd, Patrick
> Cc: linux-poweredge.lists at tisc.de; linux-poweredge-Lists
> Subject: Re: SAS 5/iR raid migration
>
> Thanks very much Tino & Patrick.
>
> I am guessing the same goes for the SAS6/iR too.
>
> On Wed, May 12, 2010 at 3:00 PM,  <Patrick_Boyd at dell.com> wrote:
>> SAS 5/iR does not allow for RAID Level Migration or Capacity Expansion (Reconfiguration in OMSA parlance).
>>
>> -----Original Message-----
>> From: linux-poweredge-bounces-Lists On Behalf Of Tino Schwarze
>> Sent: Wednesday, May 12, 2010 4:12 AM
>> To: linux-poweredge-Lists
>> Subject: Re: SAS 5/iR raid migration
>>
>> Hi Ben,
>>
>> On Wed, May 12, 2010 at 10:01:19AM +0100, Ben Tisdall wrote:
>>
>>> I wonder if someone could confirm to me that non-destructive  raid
>>> level migration (1 => 0) is NOT possible with the SAS5/iR controller?
>>
>> Such conversion would be very risky, to say the least. (In RAID1, you
>> have a copy of each data block on both disks, in RAID0, you distribute
>> data blocks evenly: block0 -> disk0, block1 -> disk1, block2 -> disk0,
>> block3 -> disk1 etc.) Apart from that, the SAS 5/iR is a rather stupid
>> controller with no fancy logic etc, so I guess it's simply not supported.
>>
>>> >From the lack of that option in VD menu I assume that is the case,
>>> unless it's matter of a driver version:
>>>
>>> Firmware Version      00.10.51.00.06.12.05.00
>>> Driver Version        3.04.03
>>> Minimum Required Driver Version       3.12.29.00
>>>
>>> This is OM 6.2 on Fedora 6 (cannot be upgraded to suit unfortunately).
>>
>> OMSA or OS version shouldn't matter at all.
>>
>> Tino.
>>
>> --
>> "What we nourish flourishes." - "Was wir nähren erblüht."
>>
>> www.lichtkreis-chemnitz.de
>> www.tisc.de
>>
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