<div class="gmail_quote"><div>Hi </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit">
<br><br>I'm writing a survey on Clouds for research purposes. I have some questions related to the match-making scheduler that OpenNebula uses:<br><br>1. it's not clear for me if the placement policies can be configured per VM type or per VM instance, could you clarify this?<br>
</td></tr></tbody></table></blockquote><div><br></div><div>The Requirements and rank expressions are given in the VM description file (template), so they can be configured per VM instance. However when using a cloud interface, the user can not specify these attributes and so are defined by the cloud administrator per VM type.</div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td valign="top" style="font:inherit"><br>2. are the placement policies configurable per cloud client or for the whole cloud platform?<br>
</td></tr></tbody></table></blockquote><div><br></div><div>Both scenarios can be implemented. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><table cellspacing="0" cellpadding="0" border="0">
<tbody><tr><td valign="top" style="font:inherit"><br>3. is it possible to configure the policies in such a way as to distribute a client's VMs across the physical hosts in such a way as to reduce the probability of platform failure as a result of hardware failure? Is this do-able without modifying the source code of OpenNebula?<br>
</td></tr></tbody></table></blockquote><div><br></div><div>Yes</div><div><br></div><div>Cheers </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><table cellspacing="0" cellpadding="0" border="0">
<tbody><tr><td valign="top" style="font:inherit"><br><br>Thanks very much,<br><br>Adrian Muresan<br></td></tr></tbody></table><br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Ignacio M. Llorente, Full Professor (Catedratico): <a href="http://dsa-research.org/llorente" target="_blank">http://dsa-research.org/llorente</a><br>DSA Research Group: web <a href="http://dsa-research.org" target="_blank">http://dsa-research.org</a> and blog <a href="http://blog.dsa-research.org" target="_blank">http://blog.dsa-research.org</a><br>
OpenNebula Open Source Toolkit for Cloud Computing: <a href="http://www.OpenNebula.org" target="_blank">http://www.OpenNebula.org</a><br>