> Hello...
>
>  I searched though the mailing list archives and didn't see any mention
> of this. I have a rhel 5.1 x86_64 server connected to a NetApp via two
> qlogic HBAs (1). I can get 300-350MBytes/sec using a single controller.
> However when I configure multipath (3) and use two FC connections ( one
> from each FC card), I do not see twice the performance (3), but the same
> performance as with a single card. I believe I have multibus enabled
> (4).

You do realize that your I/O is hardly ever restricted by available
bandwidth but more the actual I/O capacity of the underlying disk system?

Yes there are situations where bandwidth is the key.

--

Jussi


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