Dual-Controller HA Setup - Syncro CS

[Marc Smith]

Hi,

I wrote a brief article on a recent dual-controller ESOS HA setup we developed around the LSI Syncro CS 9286-8e solution: http://marcitland.blogspot.com/2014/07/open-storage-dual-controller-oss-disk.html

I've had a couple people ask me some time back about our experiences with this new LSI Syncro CS controller, so I figured I'd share it here in hopes that it gets to those that asked.

Comments/feedback are welcome and appreciated!

--Marc

[Niyazi Elvan]

Hello Marc,

Thank you for the great article ! I have been trying to find a fund at my company for exactly the same setup. So here is a real life PoC for me in order to convince my manager :)

At the moment, there is no obstacle for Open Storage to be accepted as enterprise class solution. We have the hardware, we have the  software.

As far as I know, Syncro cards work with disks/enclosures externally connected with sas cables. Do you have any idea whether it might work with some luns presented over FC HBA to the hosts with the same lun id ? I am trying to use cachecade feature for SAN disks and therefore I might be able to setup a storage virtualizer.

Cheers!

Niyazi

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Niyazi Elvan

[Marc Smith]

On Wed, Jul 16, 2014 at 4:58 AM, Niyazi Elvan <niyaz...@gmail.com> wrote:
> Hello Marc,
>
> Thank you for the great article ! I have been trying to find a fund at my
> company for exactly the same setup. So here is a real life PoC for me in
> order to convince my manager :)
>

Thanks.

> At the moment, there is no obstacle for Open Storage to be accepted as
> enterprise class solution. We have the hardware, we have the software.
>
> As far as I know, Syncro cards work with disks/enclosures externally
> connected with sas cables. Do you have any idea whether it might work with
> some luns presented over FC HBA to the hosts with the same lun id ? I am
> trying to use cachecade feature for SAN disks and therefore I might be able
> to setup a storage virtualizer.

No, I don't think that would work with the Syncro controllers. You
should look at using ESOS machines in a cluster and use QLogic FC HBAs
as initiators (for your presented LUs), then use bcache on top of that
which would give you the CacheCade-like feature.


--Marc