Re: About seting up Raid5 on a four disk box.

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On Wed, Oct 14, 2009 at 3:53 PM, Antonio Perez <ap23563m@xxxxxxx> wrote:
>
> Majed B. wrote:
>
> > I see.
> >
> > Well, whether MD is smart enough to rearrange a queue when the arrays
> > are sharing disks or not, it still means that you can't run your
> > processes in parallel.
>
> Does that means that different processes (treads) can't request reads on
> different places on the disk concurrently?
>
> I am sorry, but it seems that we are speaking different languages.
>
> --
> Antonio Perez

Your applications can request as much files as they want regardless of
their location, but the mechanical heads move together, so they can be
at a single location at a point of time reading a single stream of a
file (or multiple files if they were next to each other on the
physical platter).

--
      Majed B.
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