Just as an additional tip, there are now iSCSI solutions that provide dual
controller redundancy such as some of the Equalogic stuff from Dell.

Again NetApp does most of everything you want, iSCSI or FCAL with
multicontroller, with iSCSI you won't need an FCAL switch.

The advantage of such an external SAN unit is that you can do Snapshotting
for added redundancy even though with INNODB (if you are using it) you'll
still have to manually dump the DB for snapshotting.

-DK

On Mon, Aug 10, 2009 at 1:33 AM, Trevor Benedict <[email protected]> wrote:

> I was just having a conversation in the irc about RAID.
>
> Does anyone know of a hardware raid system that would have (in the same
> box) 2 raid cards, and it act like a RAID 1 or 1+0 or even a RAID 5/6? Same
> mobo/cpu.
>
> I would think someone like 3ware would have such a thing. This way you
> don't have to have a 2nd xU mirror, and have to do "real time" replication,
> and IP stuff.
> Linux does support hotswap pci-e. I guess the single point of failure is
> the mobo and such.
>
> I only bring this up because I had a 3ware card fail on me last Monday. It
> was a MySQL master.
>
> Thanks,
> -- Trevor Benedict
>
>
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