Well promise RAID is software raid as well. Using the included
2.6xx raid functionality will at least not hurt your performance
anymore than using the Promise software raid drivers. Depending
on the nature of Promise's drivers(which i have heard mainly
negative things) you will get better performance using the built
in RAID from Linux.
Steven Moix - Axianet.ch wrote:
> Hello,
>
> In some weeks I'm going to reinstall some old RedHat9 based servers with
> Promise FastTrak TX2000 "semi-hardware" RAID1 controllers. I just tried
> to install CentOS 4.0 on a computer with a spare card and as usual both
> HDD attached to the RAID1 controller are seen separately by the
> installer because the specific driver for the TX2000 wasn't loaded.
> Nothing new here, it was always like this on every distro as far as I know.
>
> Now I googeled a bit and have some questions:
>
> 1. In some forums I could read that the FastTrak series in RAID mode
> wasn't supported anymore in the 2.6 kernel (was PDCRAID module in the
> later 2.4 kernels).
> Quoted apparently from the linux kernel mailing list:
>
>>> In 2.6, Promise software RAID support does not exist. In
>>> conversations with Promise, we all agreed to encourage and support
>>> the standard Linux RAID, md.
>
> So does this mean that I have to use software RAID in linux if I don't
> want to load the drivers provided by Promise (see question 2)?
>
> 2. On the other hand Promise provides the partial source code for their
> driver, but there is a silly problem with this...I want to install my OS
> directly on the RAID array :)
> So I guess that I would have to:
> - Install CentOS on another computer, compile the driver provided by
> Promise, make a driver disk (don't ask me how).
> - Boot CentOS on the server with the controller and type "linux dd" to
> load this driver disk.
> - Pray and correct bugs for the next 2 weeks.
> Is this the right way to go?
>
> Any feedback with FastTrak TX2000 or TX4000 controllers would be very
> welcome, let me know which solution you choosed.
>
> Thanks
> Steven
>
> _______________________________________________
> CentOS mailing list
> CentOS@xxxxxxxxxx
> http://lists.centos.org/mailman/listinfo/centos
>
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