Anonymous_User Absent Member.
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scared shitless by posts about RAID controllers and OES2 / 11

Can anyone recommend a decent RAID controller for SAS

(1) That runs out of the box
(2) That does NOT stop working on Kernal updates
[ at least in your experience upto now... who knows in the future]
[ I probably won't do updates once installed in production life
for fear of breaking it ... unless a mega security fix is required ]
(3) I only need RAID 1 support

Server will support 20-25 users fairly active users with CAD files

I have LSI megaraid 8208ELP and Teckram Fastrak 4650 - neither of these seem
to work
I've downloaded latest drivers and installed

Someone suggeted Adaptec 6504 or HP Smart Array 462828-B21 - both work on
REDHAT not tried on SLES





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4 Replies
Anonymous_User Absent Member.
Absent Member.

Re: scared shitless by posts about RAID controllers and OES2 / 11

On 05/03/2012 11:18, Brian wrote:
> Can anyone recommend a decent RAID controller for SAS
>
> (1) That runs out of the box
> (2) That does NOT stop working on Kernal updates
> [ at least in your experience upto now... who knows in the future]
> [ I probably won't do updates once installed in production life
> for fear of breaking it ... unless a mega security fix is required ]
> (3) I only need RAID 1 support
>
> Server will support 20-25 users fairly active users with CAD files
>
> I have LSI megaraid 8208ELP and Teckram Fastrak 4650 - neither of these seem
> to work
> I've downloaded latest drivers and installed
>
> Someone suggeted Adaptec 6504 or HP Smart Array 462828-B21 - both work on
> REDHAT not tried on SLES


Brian, you need one which is supported in the linux kernel itself not
with a separate driver as you have surmised. I was in the same position
myself a couple or years ago.
Unfortunately it is unlikely to get that cheaply because those are not
real RAID cards the low end card I used is the HP Smart Array E200i
(includes BBWC) although whether that is still available seems debatable.

Although the P212 you refer to seems the basic unit from HP now.

The thing about the proper HP Smart Array controllers, (not counting the
B110i) is the drivers "cciss" & "hpsa" are in the kernel and have been
for a long time.

http://cciss.sourceforge.net/

This is the advantage of going with a big name server manufacturer

If you are looking at Adaptec then a quick glance at the Adaptec Linux
blog site

http://www.adaptec.com/weblog/2011/11/18/linux-drivers-for-series-6-controllers/

shows that the series 6 controller's updated version of aacraid will not
be in SLES11 until SP2 and so unsuitable for an OES11 implementation at
this time. You may be able to use a series 5 controller.

LSI's website

http://kb.lsi.com/KnowledgebaseArticle15753.aspx

shows

Linux kernels 2.6.23 and newer include native support for the 3ware
7000*/8000*/9500S/9550SX(U)/9590SE/9650SE/9690SA series controllers.

and the megaraid products are only supported with specific drivers, so
in my opinion, AVOID! which is a shame because I loved the megaraids in
NetWare and had nothing but trouble with the 1 3ware controller I have
ever used.

Promise's Webpage seems to say that the Supertrak EX range are fully
linux supported with the driver in the kernel but there appears to be an
exception with SLES 11 SP1!

http://www.promise.com/single_page_session/page.aspx?region=en-US&m=610&&rsn=108


Intel's website is a bit confusing.

Hope this helps as a starter.

Anyone else able to chime in?

Karim




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Anonymous_User Absent Member.
Absent Member.

Re: scared shitless by posts about RAID controllers and OES2 / 11

Thanks for your detailed response.

Not getting anywhere fast I did order a P212 today

I did have HP E200 - but couldn't find the cables ! - so went for a P212...
here's hoping !

I'll take a look a the links you gave.

Thanks again.


"Karim C Kronfli" <karim@kronfli.demon.co.NOSPAMuk> wrote in message
news:5x85r.4369$V43.4214@kovat.provo.novell.com...
> On 05/03/2012 11:18, Brian wrote:
>> Can anyone recommend a decent RAID controller for SAS
>>
>> (1) That runs out of the box
>> (2) That does NOT stop working on Kernal updates
>> [ at least in your experience upto now... who knows in the future]
>> [ I probably won't do updates once installed in production life
>> for fear of breaking it ... unless a mega security fix is
>> required ]
>> (3) I only need RAID 1 support
>>
>> Server will support 20-25 users fairly active users with CAD files
>>
>> I have LSI megaraid 8208ELP and Teckram Fastrak 4650 - neither of these
>> seem
>> to work
>> I've downloaded latest drivers and installed
>>
>> Someone suggeted Adaptec 6504 or HP Smart Array 462828-B21 - both work on
>> REDHAT not tried on SLES

>
> Brian, you need one which is supported in the linux kernel itself not with
> a separate driver as you have surmised. I was in the same position myself
> a couple or years ago.
> Unfortunately it is unlikely to get that cheaply because those are not
> real RAID cards the low end card I used is the HP Smart Array E200i
> (includes BBWC) although whether that is still available seems debatable.
>
> Although the P212 you refer to seems the basic unit from HP now.
>
> The thing about the proper HP Smart Array controllers, (not counting the
> B110i) is the drivers "cciss" & "hpsa" are in the kernel and have been for
> a long time.
>
> http://cciss.sourceforge.net/
>
> This is the advantage of going with a big name server manufacturer
>
> If you are looking at Adaptec then a quick glance at the Adaptec Linux
> blog site
>
> http://www.adaptec.com/weblog/2011/11/18/linux-drivers-for-series-6-controllers/
>
> shows that the series 6 controller's updated version of aacraid will not
> be in SLES11 until SP2 and so unsuitable for an OES11 implementation at
> this time. You may be able to use a series 5 controller.
>
> LSI's website
>
> http://kb.lsi.com/KnowledgebaseArticle15753.aspx
>
> shows
>
> Linux kernels 2.6.23 and newer include native support for the 3ware
> 7000*/8000*/9500S/9550SX(U)/9590SE/9650SE/9690SA series controllers.
>
> and the megaraid products are only supported with specific drivers, so in
> my opinion, AVOID! which is a shame because I loved the megaraids in
> NetWare and had nothing but trouble with the 1 3ware controller I have
> ever used.
>
> Promise's Webpage seems to say that the Supertrak EX range are fully linux
> supported with the driver in the kernel but there appears to be an
> exception with SLES 11 SP1!
>
> http://www.promise.com/single_page_session/page.aspx?region=en-US&m=610&&rsn=108
>
>
> Intel's website is a bit confusing.
>
> Hope this helps as a starter.
>
> Anyone else able to chime in?
>
> Karim
>
>
>
>



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Knowledge Partner
Knowledge Partner

Re: scared shitless by posts about RAID controllers and OES2 / 11

In article <Xh15r.4277$V43.3824@kovat.provo.novell.com>, Brian wrote:
> (1) That runs out of the box
>

Then you need a RAID card that is a full hardware RAID card and not one of the fairly recent class of WinRAID
cards that are really only for Windows 'servers' and only for the matching version of Windows (don't expect to
be able to use those for next generation of Windows). This whole inexpensive class is like the WinModems of
the 1990s that only worked for specific ranges of Windows and nothing else.
Most if not all of the respectable RAID controllers have them, so you can't just go by brand name, but have to
look closely to see if the hardware vendors explicitly support SuSE/SLES for the particular model you are
looking at. I even do that for Windows server installs just so that I don't have to worry about it when it
comes time to upgrade the server down the road.
The old saying "you get what you paid for" does apply here. If you go cheap........


Andy Konecny
KonecnyConsulting.ca in Toronto
------------------------------------------------------------------------
Andy's Profile: http://forums.novell.com/member.php?userid=75037


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Anonymous_User Absent Member.
Absent Member.

Re: scared shitless by posts about RAID controllers and OES2 / 11

As an addendum, Dell's Linux support pages seem quite comprehensive with
some interesting information about LSI which is their primary manufacturer.

However to me it is not quite clear enough so I would only risk my job
on it with some thorough testing.

Karim
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