{"id":2040,"date":"2017-05-17T10:08:25","date_gmt":"2017-05-17T10:08:25","guid":{"rendered":"http:\/\/blogs-dc.azurewebsites.net\/?p=2040"},"modified":"2023-03-16T14:28:47","modified_gmt":"2023-03-16T18:28:47","slug":"pulling-the-plug-why-we-chose-to-black-out-an-entire-campus-and-how-it-went","status":"publish","type":"post","link":"http:\/\/blog.vantage-dc.com\/fr-ca\/2017\/05\/17\/pulling-the-plug-why-we-chose-to-black-out-an-entire-campus-and-how-it-went\/","title":{"rendered":"D\u00e9brancher la prise : pourquoi nous avons choisi de couper le courant d'un campus entier \u2014 et comment cela s'est pass\u00e9"},"content":{"rendered":"
\"\"<\/figure>\r\n\r\n\r\n\r\n

In a data center, nothing is more important to business continuity than redundancy<\/strong><\/h2>\r\n\r\n\r\n\r\n

At Vantage, testing redundancy is non-negotiable. In fact, we\u2019re never not<\/em> doing it. We have a computerized maintenance management system (CMMS), and every one of the components that make up our data centers is in that system. Each component has a schedule for when, and how, it needs to be maintained\u2014and that includes testing.<\/p>\r\n\r\n\r\n\r\n

\u201cCertain things have a monthly schedule; other things have a quarterly or annual,\u201d says Chris Yetman, our Chief Operating Officer. \u201cAnd at some point, you\u2019re turning the entire component off.\u201d<\/p>\r\n\r\n\r\n\r\n

Whenever we turn off a component, we note the alarms generated\u2014and sometimes not generated. If we don\u2019t get the expected result, we create additional follow-through tickets to resolve the alarm problem.<\/p>\r\n\r\n\r\n\r\n

Introducing the campus-wide blackout<\/strong><\/h3>\r\n\r\n\r\n\r\n

Of course, we don\u2019t stop with the component level. In the past, we\u2019ve run blackouts on entire buildings to make sure that we\u2019re successfully redundant. And this year, we decided to run a blackout on our entire Santa Clara campus.<\/p>\r\n\r\n\r\n\r\n

We didn\u2019t do it lightly. \u201cWe had very stringent methods of procedure,\u201d Chris says. \u201cAnd we had steps to take in the event of a failure, so that there were no interruptions in service.\u201d<\/p>\r\n\r\n\r\n\r\n

For the test, which was completed on April 26, 2017, we brought in additional staff, and we created stations with small teams of people wherever we had an electrical switch or a key mechanical component. There was communication across the board among all of our teams, using radios and other methods, to make sure that we were staying on track.<\/p>\r\n\r\n\r\n\r\n

When we pulled the plug, each station knew exactly how its equipment was supposed to react. As long as things went according to script, nobody would have to touch a thing.\u00a0 And if something didn\u2019t work, we had plans for every station in place, down to the second. As soon as a number of seconds passed without the required result, each team had a process for manually forcing the switch or backing out to ensure that there was no disruption to our customers\u2019 critical loads.<\/p>\r\n\r\n\r\n\r\n

How did it feel to black out an entire campus? \u201cIt may have been a little scary,\u201d Chris says. \u201cBut we knew it was right thing to do.\u201d<\/p>\r\n\r\n\r\n\r\n

\"\"<\/a><\/figure>\r\n\r\n\r\n\r\n

Reporting back from the blackout.<\/strong><\/h3>\r\n\r\n\r\n\r\n

At 11:00 a.m. on April 26, 2017, we dropped the mains coming off our substation and watched nearly 30 generators light up at once. We watched the power transfer over successfully. And we watched the campus continue to perform, with no interruption in service.<\/p>\r\n\r\n\r\n\r\n

The blackout confirmed some of our hopes and expectations around improvements we\u2019d made. For example, over the previous six months, we\u2019d spent time analyzing the code that tells the parallel switch gear when to switch over. As a result, we\u2019d re-engineered our timing to improve the speed, so we\u2019d spend less time on battery and recover mechanical power faster\u2014and the blackout confirmed the efficiency of that arrangement. In fact, we cut the amount of time it takes to transfer the buildings to the generators nearly in half. Of course, we\u2019re never dropping critical load, but the lights came back on faster and the mechanical equipment recovered faster, so there was less of a temperature deviation. And the only way to prove that our buildings are responding better under these conditions than previously was to test.<\/p>\r\n\r\n\r\n\r\n

We had a few minor blips, too. One of our breakers failed. The power was simply shunted off in another direction, so it wasn\u2019t a problem\u2014and it\u2019s an easy go-back-and-fix. And if we hadn\u2019t caught it during the intentional campus-wide blackout, it might not have been there when we actually needed it. We also had an issue with a single generator, but we have more than enough generator redundancy, so that wasn\u2019t a problem, either.\u00a0 Again, we were able to fix the generator problem and avoid issues in the future.<\/p>\r\n\r\n\r\n\r\n

Some of our customers were very interested in the blackout. Our largest customer came over for a visit just before we started. \u201cThey were a bit nervous,\u201d Chris says, \u201cbut they completely understood why we needed to do it.\u201d<\/p>\r\n\r\n\r\n\r\n

After the cut, the customer stopped by again and reported that everything was good on their end\u2014in fact, the temperature had hardly moved. Later, when we sent out a notice that we were going to move back to grid power, this customer wanted to stay and watch. \u201cWe invited them into the room,\u201d Chris laughs, \u201con the condition that they touch nothing and remain quiet.\u201d<\/p>\r\n\r\n\r\n\r\n

Most of our customers didn\u2019t even notice that anything had happened. In fact, on the morning of April 27, the day after <\/em>the blackout, we got an email from a customer asking us when we\u2019d be doing it. \u201cThey were disbelieving,\u201d Chris says. \u201cAnd it made me chuckle. But that\u2019s the point. Nothing happened, and nothing should happen.\u201d<\/p>\r\n","protected":false},"excerpt":{"rendered":"

In a data center, nothing is more important to business continuity than redundancy At Vantage, testing redundancy is non-negotiable. In fact, we\u2019re never not doing…<\/p>","protected":false},"author":5,"featured_media":2134,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[229,233],"tags":[],"class_list":["post-2040","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data-center-operation","category-editors-picks"],"yoast_head":"\nPulling the plug: Why We Chose to Black out an Entire Campus\u2014and How It Went - Data Centers Today | Vantage Data Centers<\/title>\n<meta name=\"description\" content=\"Are you thinking about redundancy when you think about your data center design? 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