On Saturday 04 August 2001 11:39,  Manuel Bouyer wrote:
>
> The main downside is performances problems: with stripping, data are
> equally distributed across the component ("interleaved"), so when you read
> a large file data are fetched from all component providing a performances
> boost. Concatening will just put component one after the other (sector 0 to
> x are on component 0, x to y on component 1, etc).
> To see the difference, do a 'dd' from your raid0 raw device to /dev/null.
> With stripping, you'll see activity on all component. With concatenation
> you'll see activity on the first component, then the second, etc ...
>

Everytime I shutdown the raid-10 server, the parity of the raid sets have to 
be reconstructed. Is this to do with the fact that my raid-0 disk sets are 
not the same size, ie one 20G and 15G?

David Kwok