Re: _ASM_ALLOW_ONLY_RAW_DISKS

From: Kevin Jernigan <kevin.jernigan_at_oracle.com>
Date: Fri, 17 Oct 2014 09:33:52 -0700
Message-ID: <544144F0.8070900_at_oracle.com>

If you're on 11g or higher, you should use Direct NFS (dNFS), not standard NFS. It will provide significantly better performance, better load balancing if you have multiple NICs, and transparent failover if you have multiple NICs and one of the NICs fails...KJ

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On 10/17/14, 5:56 AM, Kenny Payton wrote:


>

> Thanks for your reply, I haven't started any testing yet.  Hopefully 

> next week I get an opportunity to dig a little deeper.

>

> On Oct 16, 2014 11:29 PM, "Seth Miller" <sethmiller.sm_at_gmail.com 

> <mailto:sethmiller.sm_at_gmail.com>> wrote:

>

>     Kenny,

>

>     I'm a little confused by your post. The

>     parameter _ASM_ALLOW_ONLY_RAW_DISKS is not required for using ASM

>     with files on NFS mounts. The configuration to which you are

>     referring is not only common, but the recommended best practice

>     from the Oracle documentation.

>

>     Have you started any of your testing yet?

>

>     Seth Miller

>

>

>     On Sat, Oct 11, 2014 at 9:33 AM, Kenny Payton <k3nnyp_at_gmail.com

>     <mailto:k3nnyp_at_gmail.com>> wrote:

>

>         Anyone running ASM on file systems?  I have a number of

>         databases on Netapp and some on local storage but none of them

>         are also running ASM.  I’ll be running some tests in the near

>         future where I will be limited to NFS.  I’d like to have some

>         redundancy in my storage layer in addition to what the NFS

>         solution is using on the back end.  I will have access to

>         multiple separate NFS arrays and was thinking about using ASM

>         redundancy spanning separate NFS mounts ( from separate arrays

>         ). This is not a common configuration and I’m not sure how

>         supportable this would be considering you have to set a hidden

>         parameter to enable ASM to scan files.  I’m curious to hear if

>         anyone is actually using this other than just to play around

>         on a laptop.

>

>

>         Thanks,

>         Kenny

>

>         --

>         http://www.freelists.org/webpage/oracle-l

>

>

>



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Received on Fri Oct 17 2014 - 18:33:52 CEST