Re: nVidia or software RAID 5?

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On Wed, 2007-05-23 at 11:12 +0200, Klaasjan Brand wrote:
> 
> On 5/22/07, Gilboa Davara <gilboad@xxxxxxxxx> wrote:
>         
>         Unlike the nVidia RAID, Linux' software RAID:
>         A. ... can use partition instead of full drives (In your case:
>         5x300GB
>         in RAID5/md0 and 4x200GB in RAID/md1)
>         B. ... can be moved to a different. Just connect the driver to
>         a new 
>         machine, no matter which SATA controller is being used, and
>         it'll work
>         out of the box.
>         C. ... scales much better, as the CPU power increases.
> 
> Not really since nvidia RAID is driver-based you're using the Linux
> software RAID implementation regardless of the way you configure it.
> The only difference is the on-disk format (and the fact the BIOS can
> boot from the nvidia format, but not the Linux-native format) and that
> the Linux format is a bit more flexible. 
> I'm not sure, but I suppose the Linux software RAID driver should be
> able to mount the nvidia format, even when the controller in use is
> not nvidia-based.
> 

.... Are you sure? AFAIK dmraid != softraid.
Either way, if your machine dies with the nVidia RAID, you have zero
chance of putting the drives in a new machine and getting them to work
out of the box.
With software RAID, it's just a matter of connecting the power cable...

- Gilboa


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