RE: NFS on a 10g RAC cluster

I think I may have stated the problem a bit ambiguously - the intent was not to store database files on NFS, but rather to host NFS on the same platform, and let CRS manage and failover the NFS daemons. CRS can be extended to manage non-Oracle applications. The database is already built and running via ASM storage to a SAN.  

From: Dan Norris [mailto:dannorris_at_dannorris.com] Sent: Monday, December 10, 2007 5:00 PM
To: krish.hariharan_at_quasardb.com; Crisler, Jon Cc: Oracle-L Freelists
Subject: Re: NFS on a 10g RAC cluster  

I'm not a fan of putting Oracle DBs on NFS. Furthermore, as this list shows:
http://www.oracle.com/technology/products/database/clustering/certify/te ch_generic_unix_new.html, only a relatively small handful of specialized NFS appliances/software are supported for RAC. That is, you can't take the typical UNIX NFS server implementation and use it to run RAC in a supported way. If you don't care about support and just want to build a sandbox, it may work fine--I've used OpenFiler for sandboxes and it worked well for my functional (not load) testing.

Dan

• Original Message ---- From: "krish.hariharan_at_quasardb.com" <krish.hariharan_at_quasardb.com> To: Jon.Crisler_at_usi.com Cc: Oracle-L Freelists <oracle-l_at_freelists.org> Sent: Monday, December 10, 2007 1:37:46 PM Subject: Re: NFS on a 10g RAC cluster

Jon,

From discussions with a Unix architect, I understood that read-write nfs has some holes that our security teams did not like. We however use read only nfs routinely in many environments. The issues were: 1. Security did not like us using nfs, especially read-write 2. In our Solaris environments, in some older OS releases, stale nfs mounts were problematic.

A question though: Is there a reason why you wouldn't have the nfs mounts
on all nodes of the RAC and perhaps control access to that mount point through, say the services framework as opposed to failing the mount point
to different nodes?

-Krish

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http://www.freelists.org/webpage/oracle-l Received on Mon Dec 10 2007 - 16:03:29 CST