Tag Archives: Windows Server Failover Clustering

It’s Time To Demystify Quorums

As I read through the SQL Server forums and field questions from IT pros, it surprises me how many are simply off-put by the mention of the word quorum. It’s a six-letter word treated like a part of our collective four letter vocabulary.

Quorum Defined: A voting mechanism to ensure correct ownership of cluster resources.A “quorum” in an IT-sense is simply a voting mechanism to ensure the correct ownership of a cluster. Most commonly, it’s used in conjunction with Always On (both Failover Cluster Instances and Availability Groups), Hyper-V Clusters and all Windows Server Failover Clusters.

The key isn’t to know where to use them it’s how to use them. I put together a short 30 minute webcast that dives into the a variety of quorum types most commonly used — including the pros, cons, and illustrations to demystify quorums and, dare I say, make them easy to understand. I also suggest tuning in after the 30 minute mark — we had some great questions come in as part of the Q&A.

View the webinar now

Additional Resources

Press Release: Implementing a SANLess Cluster in Under an Hour Will be the Focus of the Next SIOS Webinar

SAN MATEO, CA – June 11, 2015 – SIOS Technology Corp. (www.us.sios.com), maker of SAN and #SANLess clustering software products, today announced that MS SQL Server MVP Kendal Van Dyke will be the featured presenter in a live webinar that will teach attendees how to implement a SANLess SQL Server clustered instance in less than an hour.

Titled, “Implementing a SANLess SQL Server Cluster in Under an Hour,” this webinar will be held on Thursday, June 18 at 10:00 AM PDT / 1:00 PM EDT. To register, please visit: http://us.sios.com/2015-06-webinar

In this webinar, Kendal Van Dyke will share how to migrate a replication distributor from a standalone instance to a clustered instance in under an hour. Drawing from real world experience, Kendal’s use case is a company that needed to implement a failover cluster to protect their SQL Server replication distributor and the applications that rely on it during a strict one-hour window and without causing disruption to ongoing business processes or slowing performance. Kendal will describe the customer’s HA needs, options and why a SIOS SANLess cluster was the solution of choice.

About the Speaker

Kendal Van Dyke is a principal consultant at UpSearch, a Microsoft Cloud and Database Platform Partner. Kendal is passionate about helping leaders use Microsoft’s SQL Server to solve complex problems that protect, unlock and optimize data’s value. Since 1999, Kendal has specialized in SQL Server database management solutions. He excels at disaster recovery, high availability planning/implementation and debugging/troubleshooting mission critical SQL Server environments. He currently serves the SQL Server community as founder and president of MagicPass, the Orlando, FL based chapter of the Professional Association for SQL Server (PASS). Since 2008, Kendal has operated a SQL Server focused blog at http://www.kendalvandyke.com/.

About SIOS Technology Corp.

SIOS Technology Corp. makes SAN and #SANLess software solutions that make clusters easy to use and easy to own. An essential part of any cluster solution, SIOS SAN and #SANLess software provides the flexibility to build Clusters Your Way™ to protect your choice of Windows or Linux environment in any configuration (or combination) of physical, virtual and cloud (public, private, and hybrid) without sacrificing performance or availability. The unique SIOS #SANLess clustering solution allows you to configure clusters with local storage, eliminating both the cost and the single-point-of-failure risk of traditional shared (SAN) storage.

Founded in 1999, SIOS Technology Corp. (www.us.sios.com) is headquartered in San Mateo, California, and has offices throughout the United States, United Kingdom and Japan.

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SIOS, SIOS Technology, SIOS DataKeeper, SIOS Protection Suite, Clusters Your Way, and associated logos are registered trademarks or trademarks of SIOS Technology Corp. and/or its affiliates in the United States and/or other countries. All other trademarks are the property of their respective owners.

Contact:

Beth Winkowski
Winkowski Public Relations, LLC for SIOS
Phone: 978-649-7189
Email: bethwinkowski@US.SIOS.com

Press Release: SIOS Technical Evangelist to Discuss Protecting Business Critical Applications in Cloud Environments at Cloud Expo

SAN MATEO, CA – June 4, 2015 – SIOS Technology Corp. (www.us.sios.com), maker of SAN and #SANLess clustering software products, today announced that SIOS Senior Technical Evangelist and Microsoft Clustering MVP, David Bermingham will present a session about protecting business critical applications in cloud environments at Cloud Expo taking place next week in New York, NY.

Titled, “Protecting mission critical applications in cloud environments,” David’s session is scheduled for Thursday, June 11 at 4:50 pm at the Javits Center, New York, NY. For more information about the Cloud Expo or to register, visit here.

Gartner predicts that the bulk of new IT spending by 2016 will be for cloud platforms and applications and that nearly half of large enterprises will have cloud deployments by the end of 2017. The benefits of the cloud may be clear for applications that can tolerate brief periods of downtime, but for critical applications like SQL Server, Oracle and SAP, companies need a strategy for HA and DR protection. By adding SANLess clustering software as an ingredient to Windows Server Failover Clustering, companies can provide HA and DR protection in a cloud where traditional shared-storage clusters may be impractical or impossible. Attendees at David’s session will learn the truths and myths of HA and DR in cloud deployments that can dramatically reduce data center costs and risks.

About the Speaker

David Bermingham is recognized as a high availability expert and has been honored by his peers by being elected to be a Microsoft MVP in Clustering since 2010. David’s work as Senior Technical Evangelist at SIOS Technology Corp. has him focused on helping enterprise companies provide high availability and disaster recovery solutions for their business critical applications.

About SIOS Technology Corp.

SIOS Technology Corp. makes SAN and #SANLess software solutions that make clusters easy to use and easy to own. An essential part of any cluster solution, SIOS SAN and #SANLess software provides the flexibility to build Clusters Your Way™ to protect your choice of Windows or Linux environment in any configuration (or combination) of physical, virtual and cloud (public, private, and hybrid) without sacrificing performance or availability. The unique SIOS #SANLess clustering solution allows you to configure clusters with local storage, eliminating both the cost and the single-point-of-failure risk of traditional shared (SAN) storage.

Founded in 1999, SIOS Technology Corp. (www.us.sios.com) is headquartered in San Mateo, California, and has offices throughout the United States, United Kingdom and Japan.

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SIOS, SIOS Technology, SIOS DataKeeper, SIOS Protection Suite, Clusters Your Way, and associated logos are registered trademarks or trademarks of SIOS Technology Corp. and/or its affiliates in the United States and/or other countries. All other trademarks are the property of their respective owners.

Contact:

Beth Winkowski
Winkowski Public Relations, LLC for SIOS
Phone: 978-649-7189
Email: bethwinkowski@US.SIOS.com