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	<title>Hypervisor.fr &#187; VCDB</title>
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		<title>Seul l&#8217;application-level quiescing est supporté pour la VCDB</title>
		<link>http://www.hypervisor.fr/?p=3249</link>
		<comments>http://www.hypervisor.fr/?p=3249#comments</comments>
		<pubDate>Fri, 26 Aug 2011 21:40:42 +0000</pubDate>
		<dc:creator>NiTRo</dc:creator>
				<category><![CDATA[Kb]]></category>
		<category><![CDATA[Tips & Tricks]]></category>
		<category><![CDATA[VMware]]></category>
		<category><![CDATA[snapshot]]></category>
		<category><![CDATA[VCDB]]></category>
		<category><![CDATA[vCenter]]></category>
		<category><![CDATA[veeam]]></category>

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		<description><![CDATA[Pour un patch, test ou une modification quelconque, sachez que le &#8220;quiesced&#8221; snapshot n&#8217;est pas supporté par VMware :
Currently, VMware does not support quiesced snapshot of virtual machines running the vCenter Server database.
[...]
If quiesced snapshots are created by backup software to back up the virtual machine data, either use:

A backup solution that provides application-level quiescing.
Backup Agents in [...]]]></description>
			<content:encoded><![CDATA[<p>Pour un patch, test ou une modification quelconque, sachez que <a href="http://kb.vmware.com/kb/2003674" target="_blank">le &#8220;quiesced&#8221; snapshot n&#8217;est pas supporté par VMware</a> :</p>
<blockquote><p>Currently, <strong>VMware does not support quiesced snapshot of virtual machines running the vCenter Server database</strong>.</p>
<p>[...]</p>
<p>If quiesced snapshots are created by backup software to back up the virtual machine data, either use:</p>
<ul>
<li>A backup solution that provides application-level quiescing.</li>
<li>Backup Agents in the guest operating system.</li>
</ul>
</blockquote>
<p>Il est donc recommandé d&#8217;utiliser un produit comme <a href="http://www.veeam.com/vmware-esx-backup.htm" target="_blank">veeam backup</a> pour faire un backup de votre VCDB avant de tout exploser <img src='http://www.hypervisor.fr/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
<p>De toute façon, les snapshots c&#8217;est mal : <a href="http://www.vmdamentals.com/?p=332" target="_blank">Performance impact when using VMware snapshots</a></p>
<p style="text-align: center;"><a href="http://www.vmdamentals.com/?p=332"><img class="  aligncenter" title="Performance impact when using VMware snapshots" src="http://www.xs4all.nl/~kruimpie/VMdamentals/Snapshots/Snapshot-impact-average-iops.PNG" alt="" width="404" height="268" /></a></p>
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