Cloud Burst - Data Center Outages

by Mike Rinaldi on 7/11/12 10:32 AM

Muliple Generator Failures Cause 2nd Amazon Outage

cloud burst

Amazon Web Services says that the repeated failure of multiple generators in a single data center caused last Friday night’s power outage, which led to downtime for Netflix, Instagram and many other popular web sites. The generators in this facility failed to operate properly during two utility outages over a short period Friday evening when the site lost utility power, depleting the emergency power in the uninterruptible power supply (UPS) systems.

Amazon said the data center outage affected a small percentage of its operations, but was exacerbated by problems with systems that allow customers to spread workloads across multiple data centers. The company apologized for the outage and outlined the steps it will take to address the problems and prevent a recurrence.

> Read full article here now  
Rich Miller [Data Center Knowledge]

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Topics: data center infrastructure, Data Center, data center design, cloud computing, data center infrastructure management, electrical distribution, reduce downtime, data center outages, cloud strategy

Why Test Your Circuit Breakers? Because They Fail

by Mike Rinaldi on 6/21/12 1:53 PM

Amazon Traces Cloud Outage To Faulty Breaker

Improperly configured breaker opened and brought down portion of cloud

[Data Center Dynamics]
 

Amazon Web Services has released details about the root cause of the outage of one of its public-cloud’s availability zones that started in the evening on 14 June and lasted until next morning, US Pacific time.

In a note posted on the cloud’s status dashboard, the company said the outage was caused by a cable fault in the power distribution system of the electric utility that served the data center hosting the US-East-1 region of the cloud in northern Virginia.

The entire facility was switched over to back-up generator power, but one of the generators overheated and powered off because of a defective cooling fan. The virtual-machine instances and virtual-storage volumes that were powered by this generator were transferred to a secondary back-up power system, provided by a separate power-distribution circuit that has its own backup generator capacity.

But, one of the breakers on this backup circuit was configured incorrectly and opened as soon as the load was transferred to the circuit. The breaker was set up to open at too low a power threshold.

“After this circuit breaker opened … the affected instances and volumes were left without primary, back-up, or secondary back-up power,” Amazon’s note read.

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A survey by Hartford Insurance Company found that air circuit breakers represent 19.5% of electrical power system failures.  Test results on circuit breakers by NETA (InterNational Electrical Testing Association) firms show over a 15% failure rate.  Defective circuit breakers can allow extensive damage, personal injury, or make an outage more widespread when a fault occurs.  They can also trip when they shouldn’t, causing expensive downtime.

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Topics: data center infrastructure, reduce cost, Data Center, data center design, cloud computing, data center infrastructure management, robust data center, electrical distribution, reduce downtime, data center outages, cloud strategy

What does the data center network look like in 2012?

by Mike Rinaldi on 1/12/12 3:53 PM

All signs point to 10 Gigabit and 40 Gigabit Ethernet gathering steam in the coming year. 

Tidbits and predictions include 10 Gigabit and 40 Gigiabit Ethernet. Expect to see plenty of 10 Gigabit on server motherboards. You can even expect to see some 10 Gigabit Ethernet LAN-on-a-motherboard by early next year. All of which means 10 Gigibit at the edge and the start of 40 Gigabit in the core.

10 Gigabit Ethernet is a good starting point at the edge. It increases the bandwidth capacity for the backbone, and reduces network latency. And because it’s Ethernet, there’s built-in plug-and-play with existing equipment, reducing administration and operating costs.

Moreover, with 10 Gigabit Ethernet, there’s a clear roadmap to 40 Gigabit and 100 Gigabit Ethernet, which will be vital in meeting the growing bandwidth requirements that come with cloud computing.

>> Read more now

How to tame these high density racks with containment data center design?

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10 Data Center Predictions For 2012

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Topics: HubSpot Tips, Data Center, Data Center, Green IT, data center design, cloud computing, data center energy, robust data center, DVL, Green Technology, cloud strategy

Cloud Computing Among Topics Discussed at Technology Summit

by Mike Rinaldi on 10/17/11 11:38 AM

A new era in IT is upon us.  The 2011 Technology Training Summit and Expo will give you the knowledge you need to get ahead during this new Technology Era!

Virtualization has changed the game and affected every aspect of the data center.  It is not just about server virtualization – desktop virtualization, voice, video, mobility, collaboration, unified fabric, cloud, and tablet devices all impact how we do business now. We had the initial Technology Training Summit on Thursday, October 13, 2011 in King of Prussia, PA.  There were multiple training sessions and an expo where you had the opportunity to:

• Get the latest information and technology updates related to the data center, collaboration, wireless, and much more
• Experience live demonstrations showcasing the latest technologies
• Meet leading technology experts from major vendors and network with your industry peers.

There were many manufacturers including Cisco, Emerson Network Power, EMC, and VMware in attendance to answer questions and provide information on their specific technology and solution offerings.  Over 100 IT people from multiple industries attended the informational sessions this past Thursday. 

SIGN UP FOR THE NEXT CISCO/EMERSON TECHNOLOGY SHOW HERE

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Learn more about the latest technologies and trends in the industry and how they apply to your top IT initiatives by joining us at one of the upcoming events.  

NEXT EVENT:  October 20, 2011 at Art's Quest in Bethlehem, PA

SIGN UP FOR THE NEXT CISCO/EMERSON TECHNOLOGY SHOW HERE

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Topics: Emerson Network Power, reduce cost, Data Center, Data Center, data center design, cloud computing, private cloud, data center infrastructure management, DVL, cloud strategy

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