RE: EMC stuff

Thanks for all the offline emails. According to the document "EMC Clariion Configuration Planning Guide" (published 2005)  

"Storage systems for any hared installation require EMC Access Logix
software to control server access to the storage system LUNs.  

"The shared-or-clustered direct installation can be either shared (that is,
use Access Logix to control LUN access) or clustered (without Access Logix, but with operating system cluster software controlling LUN access)."  

So the way I read this, RAC on Clariion needs either Access Logix or OCFS.  

Henry  

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Henry Poras
Sent: Monday, August 22, 2005 2:36 PM
To: oracle-l_at_freelists.org
Subject: EMC stuff

We are beginning to do a RAC install with a Clariion SAN for storage. One thing I was told doesn't sound right to me, but since I don't pretend to be an EMC expert (and don't play one on TV. Heck, I barely get passed the 60's reruns on TV and EMC wasn't even around then) I am having trouble confirming or denying. Supposedly a LUN can only advertise itself to a single entity (i.e. node, cluster). This makes the RAC install kind of difficult. I always thought of a SAN as shared storage. What is shared storage if a LUN can't be accessed by multiple nodes? Anyone have any idea what the source of the confusion is?

Thanks.

Henry

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