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Message-ID: <6e9345580712190735l45893b40o6be0e4b5486342dc@mail.gmail.com>
Date: Wed, 19 Dec 2007 16:35:29 +0100
From: "LS Cheng" <exriscer@gmail.com>
To: zhuchao@gmail.com
Subject: Re: ASM to replace vxvm/vxfs;
Cc: "Oracle Discussion List" <oracle-l@freelists.org>
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I have done your last question for a Single Instance Database, there are
couple of WP on OTN

Thanks

--
LSC


On Dec 18, 2007 5:34 PM, Zhu,Chao <zhuchao@gmail.com> wrote:

> hi
>    We are considering the possibility of replacing veritas vxvm/vxfs with
> oracle asm management, due to higher and higher license cost for veritas.
>    Does anyone has experience manage large database systems on ASM
> instances? We have never used ASM yet so not much idea about this, just some
> rough thinking yet.
>    The things we are thinking about are:
> 1. ASM support for multipathing.  So it does not treat two path of a
> single disk as two seperate disks, and when one path failure, the other path
> can still work as VxVM DMP does. Some hosts we have 4 paths to a single
> disk;
> 2. Same disk on different host can have different names. Like c4t0d36s2 on
> host A, and c5t0d36s2 on host B; WIth such name changed after failover ASM
> instance from host A to host B, how do we do that?
> 3. How ASM instance works regarding failover from one node to another
> node?  The more difficult thing is, we could have some hosts with a single
> oracle_hoem, but 10+ standby instances, and sometimes we need to move one
> standby from node A to node B due to various reasons, will that still work
> with ASM? kind of diskgroup import/export?
>
>   Also has anything used CRS service to manage oracle HA(failover type,
> not oracle RAC)?
>
> --
> Regards
> Zhu Chao
> www.cnoug.org
>

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I have done your last question for a Single Instance Database, there are couple of WP on OTN<br><br>Thanks<br><br>--<br>LSC<br><br><br><div class="gmail_quote">On Dec 18, 2007 5:34 PM, Zhu,Chao &lt;<a href="mailto:zhuchao@gmail.com">
zhuchao@gmail.com</a>&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">hi<br>&nbsp;&nbsp; We are considering the possibility of replacing veritas vxvm/vxfs with oracle asm management, due to higher and higher license cost for veritas.
<br>&nbsp;&nbsp; Does anyone has experience manage large database systems on ASM instances? We have never used ASM yet so not much idea about this, just some rough thinking yet. 
<br>&nbsp;&nbsp; The things we are thinking about are:<br>1. ASM support for multipathing.&nbsp; So it does not treat two path of a single disk as two seperate disks, and when one path failure, the other path can still work as VxVM DMP does. Some hosts we have 4 paths to a single disk;
<br>2. Same disk on different host can have different names. Like c4t0d36s2 on host A, and c5t0d36s2 on host B; WIth such name changed after failover ASM instance from host A to host B, how do we do that?<br>3. How ASM instance works regarding failover from one node to another node?&nbsp; The more difficult thing is, we could have some hosts with a single oracle_hoem, but 10+ standby instances, and sometimes we need to move one standby from node A to node B due to various reasons, will that still work with ASM? kind of diskgroup import/export? 
<br><br>&nbsp; Also has anything used CRS service to manage oracle HA(failover type, not oracle RAC)?<br><font color="#888888"><br>-- <br>Regards<br>Zhu Chao<br><a href="http://www.cnoug.org" target="_blank">www.cnoug.org</a>
<br>
</font></blockquote></div><br>

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