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<TITLE>Re: [Lustre-discuss] MDS server and storage sizing</TITLE>
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The docs recommend an MDS volume around 1-2% of the size of your total data volume.<BR>
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There’s a lot of useful information in the manual about sizing, etc., so you’re probably better off reading them to see what suits your environment — but the 1-2% rule of thumb nonetheless applies.<BR>
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The key element if you’re setting up an active/passive MDS pair is that you need to be able to see the same device from both MDS nodes; the active one will mount it, the passive one will wait until it’s needed (i.e. the active MDS encounters a failure).<BR>
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It’s essential that they not mount it simultaneously, though, or wicked corruption is likely to occur.<BR>
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hth,<BR>
Klaus<BR>
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On 11/2/07 1:45 PM, "Mertol Ozyoney" <Mertol.Ozyoney@Sun.COM>did etch on stone tablets:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT FACE="Verdana, Helvetica, Arial"><SPAN STYLE='font-size:12.0px'>Hi All ;<BR>
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What kind of server and storage would you suggest for a 600 TB (Net) lustre system?<BR>
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I plan on using a 2 or 4 socket Quad Core Server with a lot of RAM (active passive cluster) with 24 x 146 GB 15k RPM drives. (Around 2 TB usable capacity ) <BR>
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<FONT COLOR="#0000FF"><IMG src="cid:3276856351_11028354" ></FONT> <a href="http://www.sun.com/"><http://www.sun.com/></a> </SPAN><FONT SIZE="1"><SPAN STYLE='font-size:9.0px'><B>Mertol Ozyoney <BR>
</B> Storage Practice - Sales Manager<BR>
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<B>Sun Microsystems, TR<BR>
</B> Istanbul T<FONT COLOR="#1F497D">R<BR>
</FONT> Phone +902123352200<BR>
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Email <FONT COLOR="#0000FF">mertol.ozyoney@Sun.COM</FONT> <a href="mailto:Ayca.Yalcin@Sun.COM"><mailto:Ayca.Yalcin@Sun.COM></a> </SPAN></FONT><SPAN STYLE='font-size:12.0px'> <BR>
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