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	<title>Sean Crookston &#187; SRM</title>
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		<title>The Celerra VSA : It Just Keeps Getting Better</title>
		<link>http://www.seancrookston.com/blog/2010/09/20/the-celerra-vsa-it-just-keeps-getting-better/</link>
		<comments>http://www.seancrookston.com/blog/2010/09/20/the-celerra-vsa-it-just-keeps-getting-better/#comments</comments>
		<pubDate>Mon, 20 Sep 2010 10:14:39 +0000</pubDate>
		<dc:creator>Sean Crookston</dc:creator>
				<category><![CDATA[SRM]]></category>
		<category><![CDATA[VMware]]></category>
		<category><![CDATA[Celerra VSA]]></category>
		<category><![CDATA[Site Recovery Manager]]></category>
		<category><![CDATA[vsphere]]></category>

		<guid isPermaLink="false">http://www.seancrookston.com/blog/2010/09/20/the-celerra-vsa-it-just-keeps-getting-better/</guid>
		<description><![CDATA[&#160; When I started using the Celerra VSA in its earlier versions my main need was to have a test environment for VMware’s SRM. As you will recall Site Recovery Manager requires the use of a Vendor supplied Storage Replication Adapter (SRA) so not just any Openfiler or other open source storage appliance will do]]></description>
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<p>&#160;</p>
<p>When I started using the Celerra VSA in its earlier versions my main need was to have a test environment for VMware’s SRM. As you will recall Site Recovery Manager requires the use of a Vendor supplied Storage Replication Adapter (SRA) so not just any Openfiler or other open source storage appliance will do here. </p>
<p>The Celerra VSA Uber came through and didn’t disappoint, albeit it did require a good set of hardware. My SRM lab would require two virtual center servers, 2 virtual esx(i) servers, and 2 Celerra VSA servers. It was not nearly possible to run this on any workstation grade computer I had, even loaded with 8 GB of ram and an SSD as it would quickly slow to a crawl with version 2 of the Uber VSA.</p>
<p>This was no real big surprise, we are talking about a lot of memory and process utilization on a single workstation. As result I created this virtual lab on a Cisco UCS and you would never know you weren’t on a real Celerra based on the performance I received.</p>
<p>&#160;</p>
<h2>In comes the Celerra Uber VSA 3</h2>
<p>&#160;</p>
<p>Three words on the 3rd edition of the Celerra Uber VSA:</p>
<ul>
<li>Easier</li>
<li>Faster</li>
<li>Unisphere</li>
</ul>
<p>I installed and loaded a new SRM lab this weekend, but instead tried this again on my workstation. As noted above I previously was not able to accomplish this due to resource issues on my workstation.&#160; What I found was I was able to create the same lab on my workstation thanks to the increased performance of V3. Although I could now give each of these Celerra’s 8 GB of ram with the new 64 bit base O/S I chose to continue giving them each 2 GB which seems more then plenty for my usage.</p>
<p>Additionally the setup process could not have been easier. If you remember back to the earlier days just getting the appliance setup was a <a href="http://communities.vmware.com/servlet/JiveServlet/downloadBody/9429-102-2-6591/EMC%20Celerra%20VSA%20and%20VMware%20SRM%20-%20Complete%20Setup%20and%20Configuration%20Guide%20-%20Revision%201.0.1doc.pdf.zip;jsessionid=6B400463A65BDFE3B569EED3A2323FDF" target="_blank">bit of a learning curve.</a>&#160; Everything in recent versions also now automagically works. If you need to add storage, just add another virtual drive. In earlier days this was not automatic and required me to reference <a href="http://communities.vmware.com/servlet/JiveServlet/downloadBody/9429-102-2-6591/EMC%20Celerra%20VSA%20and%20VMware%20SRM%20-%20Complete%20Setup%20and%20Configuration%20Guide%20-%20Revision%201.0.1doc.pdf.zip;jsessionid=6B400463A65BDFE3B569EED3A2323FDF" target="_blank">this guide</a> a few times to get it right. </p>
<p>A nice surprise at the end was my first hands on experience with Unisphere, EMC’s next generation of storage management. It is a lot more user friendly then Navisphere and seems to be a lot snappier as well. I quickly browsed around and figured out where everything I needed was located. </p>
<p>&#160;</p>
<p><a href="http://www.seancrookston.com/blog/wp-content/uploads/2010/09/image.png"><img style="border-bottom: 0px; border-left: 0px; display: inline; border-top: 0px; border-right: 0px" title="image" border="0" alt="image" src="http://www.seancrookston.com/blog/wp-content/uploads/2010/09/image_thumb.png" width="244" height="204" /></a> </p>
<p>&#160;</p>
<p>The new Uber VSA has been so easy to use and performance has been so good that I’ve also now gotten rid of my virtual machine running Openfiler. I had previously set this up due to its low memory requirements for usage with by nested vritual machines in my virtual VMware lab.</p>
<p>The new Celerra VSA is available in OVF format and a version for VMware workstation <a href="http://nickapedia.com/2010/09/12/ubertastic-celerra-uber-vsa-v3-unisphere/" target="_blank">here.</a>&#160;&#160; According to what I’ve read a manual will be available sometime early next month, although as you’ll read above the ease of setup is remarkable.</p>
<p>If you are looking for more information on setting up SRM, Mike Laverick wrote a great guide that you can purchase for just 10$ in digital format <a href="http://www.rtfm-ed.co.uk/2010/09/16/the-srm-book-on-digitalguru/" target="_blank">here</a>. This is a great step by step guide that covers all types of storage and although the interface has now changed from Websphere to Unisphere, the setup process is nearly the same.</p>
<ul class="related_post"><li><a href="http://www.seancrookston.com/blog/2010/06/13/error-using-vmwares-site-recovery-manager-with-emc-celerra-vsa/" title="Error using VMware&#8217;s Site Recovery Manager with EMC Celerra VSA">Error using VMware&#8217;s Site Recovery Manager with EMC Celerra VSA</a></li><li><a href="http://www.seancrookston.com/blog/2012/08/13/managing-and-optimizing-vmware-vsphere-deployments-released/" title="Managing and Optimizing VMware vSphere Deployments Book Contest">Managing and Optimizing VMware vSphere Deployments Book Contest</a></li><li><a href="http://www.seancrookston.com/blog/2012/04/27/new-book-coming-out-vcp-5-study-guide/" title="New Book Coming Out VCP 5 Study Guide">New Book Coming Out VCP 5 Study Guide</a></li><li><a href="http://www.seancrookston.com/blog/2012/01/09/forcing-a-kernel-dump-on-a-vsphere-host-the-purple-screen-of-death/" title="Forcing a Kernel Dump on a vSphere Host : The Purple Screen of Death">Forcing a Kernel Dump on a vSphere Host : The Purple Screen of Death</a></li><li><a href="http://www.seancrookston.com/blog/2011/10/12/vcdx-defense-preparation/" title="VCDX Defense Preparation">VCDX Defense Preparation</a></li><li><a href="http://www.seancrookston.com/blog/2011/09/19/what-happens-with-vmfs-luns-greater-then-2-tb/" title="What Happens With VMFS3 LUNs Greater Then 2 TB">What Happens With VMFS3 LUNs Greater Then 2 TB</a></li><li><a href="http://www.seancrookston.com/blog/2011/08/30/design-considerations-for-the-vmware-vsa/" title="Design Considerations for the VMware VSA">Design Considerations for the VMware VSA</a></li><li><a href="http://www.seancrookston.com/blog/2011/08/10/how-do-you-protect-vcenter/" title="How do you protect vCenter?">How do you protect vCenter?</a></li><li><a href="http://www.seancrookston.com/blog/2011/07/12/vsphere-5-for-the-smb/" title="vSphere 5 for the SMB">vSphere 5 for the SMB</a></li><li><a href="http://www.seancrookston.com/blog/2011/06/27/vmware-vsphere-issue-no-outbound-network-connectivity/" title="VMware vSphere Issue : No Outbound Network Connectivity">VMware vSphere Issue : No Outbound Network Connectivity</a></li></ul>]]></content:encoded>
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		<title>Error using VMware&#8217;s Site Recovery Manager with EMC Celerra VSA</title>
		<link>http://www.seancrookston.com/blog/2010/06/13/error-using-vmwares-site-recovery-manager-with-emc-celerra-vsa/</link>
		<comments>http://www.seancrookston.com/blog/2010/06/13/error-using-vmwares-site-recovery-manager-with-emc-celerra-vsa/#comments</comments>
		<pubDate>Sun, 13 Jun 2010 21:33:51 +0000</pubDate>
		<dc:creator>Sean Crookston</dc:creator>
				<category><![CDATA[SRM]]></category>
		<category><![CDATA[VMware]]></category>
		<category><![CDATA[Celerra]]></category>
		<category><![CDATA[Site Recovery Manager]]></category>

		<guid isPermaLink="false">http://seancrookston.com/blog/?p=45</guid>
		<description><![CDATA[Those that have used any form of the Celerra VSA know that at times it can be difficult to troubleshoot issues as result of it being a simulator and not the real thing. Best practice when issues occur is to revert the build back to the original configuration and try again, but recently I began]]></description>
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<p><span style="font-size: small;">Those that have used any form of the Celerra VSA know that at times it can be difficult to troubleshoot issues as result of it being a simulator and not the real thing. Best practice when issues occur is to revert the build back to the original configuration and try again, but recently I began having issues when setting up VMware Site Recovery Manager even after doing so.While I wish to say the root cause of the problem was some elaborate issue it was not. Simply put I failed to properly size the source filesystem containing the iSCSI lun that was being replicated.</span></p>
<p><span style="font-size: small;"><br />
</span></p>
<p><span style="font-size: small;">While replication worked fine as result of the initial deployment not containing any real data or data that would have changed, running a test failover in SRM resulted in the error below:</span></p>
<blockquote><p><span style="font-size: small;">Non-fatal error information reported during execution of SRA:testFailover Output: filebase: command, dir: C:/Program Files/VMware/VMware Site Recovery Manager/scripts/SAN/celerra/, fileExt: .pl Error:&#8221;</span></p></blockquote>
<p><span style="font-size: small;">Not being an expert on the topic I found it difficult to troubleshoot this issue and what was even more frustrating was that performing an actual failover DID work. Upon discussing with a co-worker the issue it led me down the path of sizing, where I found <a href="https://powerlink.emc.com/nsepn/webapps/btg548664833igtcuup4826/km/live1/en_US/Offering_Technical/Technical_Documentation/300-007-022.pdf?mtcs=ZXZlbnRUeXBlPUttQ2xpY2tTZWFyY2hSZXN1bHRzRXZlbnQsZG9jdW1lbnRJZD0wOTAxNDA2NjgwM2VjMDJlLGRhdGFTb3VyY2U9RENUTV9lbl9VU18w" target="_blank">this document</a> from EMC on sizing specifically for iSCSI luns on the Celerra. After sizing out the source lun correctly the test ran correctly. While I haven&#8217;t been able to yet figure out what the minimum requirement of SRM is to successfully run a test I do know that giving the source lun the appropriate amount of storage using the calculation below resolved the issue.</span></p>
<p><span style="font-size: small;"><br />
This document goes into great detail sizing out for Celerra replication using iSCSI luns and even takes into consideration whether the source filesystem and iSCSI luns are virtually provisioned or not, which can have quite a different effect on the resultant size of your sizing requirements.</span></p>
<p><span style="font-size: small;"><br />
</span></p>
<p><span style="font-size: small;">The equation to use for sizing is below:</span></p>
<p><span style="font-size: small;"><br />
</span></p>
<blockquote><p><span style="font-size: small;">FSmin = SizeofLun + SizeforSnapshots + SizeforTWS (Temporary Writable Snapshot)</span></p></blockquote>
<p><span style="font-size: small;"><br />
</span></p>
<p><span style="font-size: small;">Simply put the size out lun is going to be the size of the iSCSI lun plus the size for snapshots(cumulative) plus the size of TWS, which represents the changed data . These number can vary greatly depending on utilization, but two important things to recognize are that the <em>SizeforSnapshot</em>s and the <em>SizeforTWS</em> can be quite large. In fact you should plan to allocate at least the size of the iSCSI lun for the initial snapshot alone on the source files sytem, plus you&#8217;ll need to take into consideration other snapshots and the temporary TWS space.</span></p>
<p><span style="font-size: small;"><br />
</span></p>
<p><span style="font-size: small;">For those without an EMC Powerlink account I also found <a href="http://goingvirtual.wordpress.com/2009/08/11/celerra-iscsi-luns-and-file-system-sizing/" target="_blank">this blog </a>that goes into much more detail on sizing iSCSI for the EMC Celerra.</span></p>
<p><span style="font-size: small;"><br />
</span></p>
<div><span style="font-size: small;"><br />
</span></div>
</div>
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