CentOS - Oct 2005 - AIC7901 RAID320 with CENTOS4 not recognized

An INTEL Server motherboard model SE7501BR2 with an onboard Adaptec
AIC7901 controller (with HostRAID) is not being recognized by CENTOS
4.
The AIC79xx driver loads correctly, however it does not "see" the fact
that I used the HostRAID onboard software to create a RAID 1 set.

I went to the INTEL site and only found a driver for RHEL 3.0 and I
was unable to find a driver on the adaptec site.

The CENTOS4 installer gives me the option to create partitions, raids, etc.
This is not what we want since creating a RAID by software it's
supposed to be more slow that doing it hardware based right?

Does the CENTOS4 support the AIC7901 with HostRAID or not?


Thanks for your comments and suggestions.



--

-------------------------------------------
Erick Perez
Linux User 376588
http://counter.li.org/  (Get counted!!!)
Panama, Republic of Panama

On Sat, 2005-10-29 at 12:45 -0500, Erick Perez wrote:
> An INTEL Server motherboard model SE7501BR2 with an onboard Adaptec
> AIC7901 controller (with HostRAID) is not being recognized by CENTOS
> 4.
> The AIC79xx driver loads correctly, however it does not "see" the
fact
> that I used the HostRAID onboard software to create a RAID 1 set.
> 
> I went to the INTEL site and only found a driver for RHEL 3.0 and I
> was unable to find a driver on the adaptec site.
> 
> The CENTOS4 installer gives me the option to create partitions, raids, etc.
> This is not what we want since creating a RAID by software it's
> supposed to be more slow that doing it hardware based right?
I haven't bench marked it myself, but many other have stated software
raid 1 performs very well. The added benefit of not having to worry
about another driver is always a plus. You should run some tests against
your requirements for your self, you may be surprised.
> 
> Does the CENTOS4 support the AIC7901 with HostRAID or not?
> 
> 
> Thanks for your comments and suggestions.
> 
> 
> 
> --
> 
> -------------------------------------------
> Erick Perez
Ted

Erick Perez wrote:
> An INTEL Server motherboard model SE7501BR2 with an onboard Adaptec
> AIC7901 controller (with HostRAID) is not being recognized by CENTOS
> 4.
> The AIC79xx driver loads correctly, however it does not "see" the
fact
> that I used the HostRAID onboard software to create a RAID 1 set.
> 
> I went to the INTEL site and only found a driver for RHEL 3.0 and I
> was unable to find a driver on the adaptec site.
> 
> The CENTOS4 installer gives me the option to create partitions, raids, etc.
> This is not what we want since creating a RAID by software it's
> supposed to be more slow that doing it hardware based right?
> 
> Does the CENTOS4 support the AIC7901 with HostRAID or not?
In Adaptec speak HostRAID is software RAID.  What you have is not 
hardware RAID controller.  The card is really just a standard SCSI 
controller with fake RAID BIOS.  Create software RAID devices under 
CentOS (and you'll get exactly the same thing as if configuring them in 
BIOS and using Adaptec device driver).