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<blog-post>
  <author-id type="integer">71176</author-id>
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  <body-formatted>&lt;p&gt;The problems apparently started shortly after 6:30 pm PST and lasted for three hours. According to the AWS Service Health Dashboard &lt;a href="http://status.aws.amazon.com/"&gt;at the time&lt;/a&gt;:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;em&gt;A lightning storm caused damage to a 
single Power Distribution Unit (PDU) in a single Availability Zone. While most 
instances were unaffected, a set of racks does not currently have power, so the 
instances on those racks are down. &lt;/em&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;Even though this only impacted one Availability Zone, a number of EC2 customers &lt;a href="http://developer.amazonwebservices.com/connect/thread.jspa?threadID=32879&amp;amp;start=15&amp;amp;tstart=0"&gt;seem&lt;/a&gt; to have questions about the redundancy that EC2 is supposed to offer and I think the incident is a good reminder that &lt;strong&gt;cloud computing is not a replacement for best practices on the customer end.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Far too many people seem to throw their applications into the cloud and expect them to fly come rain or shine. In reality, &lt;strong&gt;redundancy is not something that you can simply forget about just because you're hosting your applications in the cloud&lt;/strong&gt;. Obviously how mission critical your applications are will determine what investments you make in setting up a redundant architecture but if you can't afford to risk the proverbial lightening strike, you had better think about redundancy on your own, cloud or no cloud.&lt;/p&gt;
&lt;p&gt;&lt;em&gt;Photo credit: &lt;a href="http://www.flickr.com/photos/elgarza/"&gt;El Garza&lt;/a&gt; via Flickr.&lt;/em&gt;&lt;/p&gt;</body-formatted>
  <body-unformatted>&lt;p&gt;The problems apparently started shortly after 6:30 pm PST and lasted for three hours. According to the AWS Service Health Dashboard &lt;a href="http://status.aws.amazon.com/"&gt;at the time&lt;/a&gt;:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;&lt;em&gt;A lightning storm caused damage to a 
single Power Distribution Unit (PDU) in a single Availability Zone. While most 
instances were unaffected, a set of racks does not currently have power, so the 
instances on those racks are down. &lt;/em&gt;&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;Even though this only impacted one Availability Zone, a number of EC2 customers &lt;a href="http://developer.amazonwebservices.com/connect/thread.jspa?threadID=32879&amp;amp;start=15&amp;amp;tstart=0"&gt;seem&lt;/a&gt; to have questions about the redundancy that EC2 is supposed to offer and I think the incident is a good reminder that &lt;strong&gt;cloud computing is not a replacement for best practices on the customer end.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Far too many people seem to throw their applications into the cloud and expect them to fly come rain or shine. In reality, &lt;strong&gt;redundancy is not something that you can simply forget about just because you're hosting your applications in the cloud&lt;/strong&gt;. Obviously how mission critical your applications are will determine what investments you make in setting up a redundant architecture but if you can't afford to risk the proverbial lightening strike, you had better think about redundancy on your own, cloud or no cloud.&lt;/p&gt;
&lt;p&gt;&lt;em&gt;Photo credit: &lt;a href="http://www.flickr.com/photos/elgarza/"&gt;El Garza&lt;/a&gt; via Flickr.&lt;/em&gt;&lt;/p&gt;</body-unformatted>
  <created-at type="datetime">2009-06-11T16:10:10+01:00</created-at>
  <enabled-blog-comments-count type="integer">5</enabled-blog-comments-count>
  <expertise-level-id type="integer">1</expertise-level-id>
  <extract-format>html</extract-format>
  <extract-formatted>&lt;p&gt;&lt;strong&gt;&lt;img alt="" height="100" src="http://farm3.static.flickr.com/2114/2176941958_7e8efb2ef4_t.jpg" style="margin-left: 5px; margin-right: 5px; float: left;" width="72" /&gt;Cloud computing is growing in popularity and many businesses, both large and small, are turning to the cloud to host critical applications.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Amazon's EC2 is one of the most popular offerings but all it took was a single lightening strike to take part of the EC2 cloud down last night.&lt;/p&gt;</extract-formatted>
  <extract-unformatted>&lt;p&gt;&lt;strong&gt;&lt;img style="margin-left: 5px; margin-right: 5px; float: left;" src="http://farm3.static.flickr.com/2114/2176941958_7e8efb2ef4_t.jpg" alt="" width="72" height="100" /&gt;Cloud computing is growing in popularity and many businesses, both large and small, are turning to the cloud to host critical applications.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;Amazon's EC2 is one of the most popular offerings but all it took was a single lightening strike to take part of the EC2 cloud down last night.&lt;/p&gt;</extract-unformatted>
  <featured type="boolean">false</featured>
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  <learn-more-formatted>&lt;p&gt;Related Econsultancy reports include our &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/e-commerce-platforms-buyer-s-guide-2009"&gt;E-commerce Platforms Buyer's Guide&lt;/a&gt;&lt;/strong&gt;, &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/delivering-successful-e-commerce-projects"&gt;Delivering Successful E-commerce Projects&lt;/a&gt;&lt;/strong&gt; and &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/online-retail-2007-checkout-special"&gt;Online Retail Checkout Special&lt;/a&gt;&lt;/strong&gt;. See also the &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/e-commerce-statistics"&gt;E-commerce Statistics Compendium&lt;/a&gt;&lt;/strong&gt;.&lt;/p&gt;</learn-more-formatted>
  <learn-more-unformatted>&lt;p&gt;Related Econsultancy reports include our &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/e-commerce-platforms-buyer-s-guide-2009"&gt;E-commerce Platforms Buyer's Guide&lt;/a&gt;&lt;/strong&gt;, &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/delivering-successful-e-commerce-projects"&gt;Delivering Successful E-commerce Projects&lt;/a&gt;&lt;/strong&gt; and &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/online-retail-2007-checkout-special"&gt;Online Retail Checkout Special&lt;/a&gt;&lt;/strong&gt;. See also the &lt;strong&gt;&lt;a href="http://econsultancy.com/reports/e-commerce-statistics"&gt;E-commerce Statistics Compendium&lt;/a&gt;&lt;/strong&gt;.&lt;/p&gt;</learn-more-unformatted>
  <legacy-article-id type="integer" nil="true"></legacy-article-id>
  <name>Lightning strikes Amazon's EC2</name>
  <private type="boolean">false</private>
  <published-at type="datetime">2009-06-11T18:24:00+01:00</published-at>
  <slug>lightning-strikes-amazons-ec2</slug>
  <tweetbacks-updated-at type="datetime" nil="true"></tweetbacks-updated-at>
  <unpublished-at type="datetime" nil="true"></unpublished-at>
  <updated-at type="datetime">2009-10-13T10:19:10+01:00</updated-at>
  <views-count type="integer">2040</views-count>
</blog-post>
