Re: 10g RAC using SAN for storage

On Sep 12, 9:29 pm, DA Morgan <damor..._at_psoug.org> wrote:
> macdba321 wrote:
> > On Sep 12, 9:35 am, DA Morgan <damor..._at_psoug.org> wrote:
> >> macdba321 wrote:
> >>> I am testing a 2 node RAC setup and want to try using a SAN for the
> >>> dedicated storage (instead of a dedicated local storage disk array
> >>> located within the same frame).
> >>> Are there any "gotchas" that I should be aware of when using the SAN
> >>> for storage as opposed to a typical storage array?
> >>> Thanks!
> >> How did you use "dedicated local storage disk" and make it shared
> >> everything?
>
> >> You've said nothing of CFS or ASM or RAW. Why?
>
> >> The biggest potential issue with a SAN is labeling the disks used
> >> for the voting disk and OCR so that they are mounted in the correct
> >> order by the O/S.
> >> --
> >> Daniel A. Morgan
> >> Oracle Ace Director & Instructor
> >> University of Washington
> >> damor..._at_x.washington.edu (replace x with u to respond)
> >> Puget Sound Oracle Users Groupwww.psoug.org
>
> > Thanks for the reply.
>
> > I plan to use ASM over raw devices. (Again, this is purely for test/
> > learning, not a production application.)
>
> > Please correct me if I'm wrong, but I'm assuming that I'll need HBAs
> > for both nodes to connect to the same LUNs on the SAN? (There's no way
> > to do it without the HBA is there?)
>
> > Thanks.
>
> Not with a SAN unless you have an antique with fibre protocol over
> copper and can find drivers for it. Another possibility is to use
> iSCSI drivers.
> --
> Daniel A. Morgan
> Oracle Ace Director & Instructor
> University of Washington
> damor..._at_x.washington.edu (replace x with u to respond)
> Puget Sound Oracle Users Groupwww.psoug.org

Thanks again for the reply. I will proceed with acquiring HBAs for each node.
A related question if I may: Why would one require a single-channel Vs. dual-channel HBA in each node?

Thanks again! Received on Mon Sep 15 2008 - 14:27:38 CDT