From: ryan_gaffuri@comcast.net
To: mzito@gridapp.com, <paul.baumgartel@credit-suisse.com>, <oracle-l@freelists.org>
Cc: "Matthew Zito" <mzito@gridapp.com>, "Baumgartel, Paul" <paul.baumgartel@credit-suisse.com>
Subject: RE: ASM IO distribution on a SAN
Date: Thu, 13 Sep 2007 19:38:28 +0000
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so I still need to set up the luns with an LVM? and then put one disk group on each LUN. 

I think I got it. 

-------------- Original message -------------- 
From: "Matthew Zito" <mzito@gridapp.com> 


It is unlikely your storage array has the capability to present a multi-TB lun, or that from an administrative perspective you would want such a thing.  ASM would be a fine way to evenly distribute IO across a series of reasonably sized LUNs.  I think Paul's point was to not count on the striping from a performance perspective, simply an administrative ones.

Matt

--
Matthew Zito
Chief Scientist
GridApp Systems
P: 646-452-4090
mzito@gridapp.com
http://www.gridapp.com


-----Original Message-----
From: oracle-l-bounce@freelists.org on behalf of ryan_gaffuri@comcast.net
Sent: Thu 9/13/2007 12:58 PM
To: paul.baumgartel@credit-suisse.com; oracle-l@freelists.org
Cc: Baumgartel, Paul
Subject: RE: ASM IO distribution on a SAN

So I don't need to ask the SAN admins to set up a series of LUNs? They can just make me one big mount point for my datafiles and it will be evenly distributed?

We may be talking 5 TBs/day of data we are inserting at full deployment plus 4 million queries.
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<DIV>so I still need to set up the luns with an LVM? and then put one disk group on each LUN. </DIV>
<DIV>&nbsp;</DIV>
<DIV>I think I got it. </DIV>
<DIV>&nbsp;</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">-------------- Original message -------------- <BR>From: "Matthew Zito" &lt;mzito@gridapp.com&gt; <BR>
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<P><FONT size=2>It is unlikely your storage array has the capability to present a multi-TB lun, or that from an administrative perspective you would want such a thing.&nbsp; ASM would be a fine way to evenly distribute IO across a series of reasonably sized LUNs.&nbsp; I think Paul's point was to not count on the striping from a performance perspective, simply an administrative ones.<BR><BR>Matt<BR><BR>--<BR>Matthew Zito<BR>Chief Scientist<BR>GridApp Systems<BR>P: 646-452-4090<BR>mzito@gridapp.com<BR><A href="http://www.gridapp.com/">http://www.gridapp.com</A><BR><BR><BR><BR>-----Original Message-----<BR>From: oracle-l-bounce@freelists.org on behalf of ryan_gaffuri@comcast.net<BR>Sent: Thu 9/13/2007 12:58 PM<BR>To: paul.baumgartel@credit-suisse.com; oracle-l@freelists.org<BR>Cc: Baumgartel, Paul<BR>Subject: RE: ASM IO distribution on a SAN<BR><BR>So I don't need to ask the SAN admins to set up a series of LUNs? They can just make me one big mount point for my datafiles and it
  will 
be evenly distributed?<BR><BR>We may be talking 5 TBs/day of data we are inserting at full deployment plus 4 million queries.<BR><BR><BR></FONT></P></BLOCKQUOTE></body></html>

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