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WHY I SHOULD CONVERT MY #AZURE CLUSTERS TO MANAGED DISKS TODAY!

August 9, 2017 by Jason Aw Leave a Comment

You may have heard about the recent storage outage that impacted some instances in the US East region back on March 16th. A root cause analysis of the outage is posted here.

March 16th US East Storage Outage

Customer impact: A subset of customers using Storage in the East US region may have experienced errors and timeouts while accessing their storage account in a single Storage scale unit

You might be asking, “What is a single Storage scale unit”. Well, you can think of it as a single storage cluster, or single SAN, or however you want to think about it. I don’t think Azure publishes their exact infrastructure, but you can probably assume that behind the scenes they are using Scale Out File Servers for backend storage.

So the question is, how could I have survived this outage with minimal downtime? If you read further down that root cause analysis you come across this little nugget.

Virtual Machines using Managed Disks in an Availability Set would have maintained availability during this incident.

What’s Managed Disks you ask? Well, just on February 8th Corey Sanders announced the GA of Managed Disks. You can read all about Managed Disks here. https://azure.microsoft.com/en-us/services/managed-disks/

The reason why Managed Disks would have helped in this outage is that by leveraging an Availability Set combined with Managed Disks you ensure that each of the instances in your Availability Set are connected to a different “Storage scale unit”. So in this particular case, only one of your cluster nodes would have failed, leaving the remaining nodes to take over the workload.

Prior to Managed Disks being available (anything deployed before 2/8/2016), there was no way to ensure that the storage attached to your servers resided on different Storage scale units. Sure, you could use different storage accounts for each instances, but in reality that did not guarantee that those Storage Accounts provisioned storage on different Storage scale units.

So while an Availability Set ensured that your instances reside in different Fault Domains and Update Domains to ensure the availability of the instance itself, the additional storage attached to each instance really represented a single point of failure. Although the storage itself is highly resilient, with three copies of your data and geo-redundant options available, in this case with a power failure the entire Storage scale unit went down along with all the servers attached to it.

So long story short…migrate to Managed Disk as soon as possible in order to help minimize downtime

https://docs.microsoft.com/en-us/azure/virtual-machines/virtual-machines-windows-migrate-to-managed-disks

And if you really want to minimize downtime you should consider Hybrid Cloud Deployments that span cloud providers or on-prem to cloud!

 

Reposted from original post by Dave Bermingham Microsoft Clustering MVP –  https://clusteringformeremortals.com/2017/03/22/why-i-should-convert-my-azure-clusters-to-managed-disks-today/

Filed Under: Clustering Simplified Tagged With: #SANLess Clusters for SQL Server Environments, #SANLess Clusters for Windows Environments, Awards, Azure, azure availability managed disk, Clustering 101, High Availability

Press Release: Using SANLess Window Server Failover Clustering to Achieve High Availability without Disruption is the Featured Topic of the Next SIOS Clustering 101 Webinar Series

June 17, 2015 by sios2017 Leave a Comment

SAN MATEO, CA – June 17, 2015 – SIOS Technology Corp. (www.us.sios.com), maker of SAN and #SANLess clustering software products, today announced Microsoft Clustering MVP and SIOS Senior Technical Evangelist Dave Bermingham will unveil strategies for quickly and cost-efficiently using SANLess Window Server Failover Clustering to implement high availability (HA) and disaster recovery (DR) in the next session of its Clustering 101 webinar series.

Titled “HA Implementation without Disruption or Delay,” this webinar will be held on Wednesday, June 24 at 10:00 AM PDT / 1:00 PM EDT. To register, please visit: http://us.sios.com/2015-06-clustering101

In this month’s Clustering 101 webinar Dave Bermingham will review strategies for implementing HA and DR for SQL Server without disrupting ongoing business operations. He will discuss real-world scenarios, key preparations, and the necessary steps for installing and configuring a SANLess Window Server Failover clustering quickly and efficiently.

Dave Bermingham is recognized within the technology community as a high availability expert and has been honored by his peers by being elected to be a Microsoft MVP in clustering since 2010. Dave’s work as director, technical evangelist at SIOS Technology Corp. has him focused on Microsoft high availability and disaster recovery solutions as well as providing hands on support, training and professional services for cluster implementations. Dave holds numerous technical certifications and draws from more than twenty years of experience in IT, including work in the finance, healthcare and education fields, to help organizations design solutions to meet their high availability and disaster recovery needs. Learn more at http://us.sios.com

About Clustering 101

Clustering 101 is a webinar series hosted by Microsoft MVP Dave Bermingham focused on addressing the numerous facets of clustering for high availability, data replication and any combination thereof. This series will air monthly, the fourth Wednesday of the month at 10:00 AM PT / 1:00 PM ET. Check our events page for details: http://us.sios.com/about/news-events/

About 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.

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

Filed Under: News and Events, Press Releases Tagged With: #SANLess Clusters for Windows Environments, Cluster MVP, Clustering 101, Webinar

Update — Clustering 101 Webinar Postponed — June 24, 2015: Live Clustering 101 Webinar: HA Implementation Without Disruption or Delay

June 11, 2015 by Margaret Hoagland

Update: Due to severe weather and power outages, today’s SIOS Clusters 101 webinar is cancelled. We are sorry for the inconvenience and we will let you know when it is rescheduled.

In this month’s Clustering 101 webinar Dave Bermingham reviews strategies for implementing high availability and disaster protection for SQL Server without disrupting ongoing business operations. He will discuss real-world scenarios, key preparations, and the necessary steps for installing and configuring a SANLess Window Server Failover clustering quickly and efficiently. 

You can participate before the event by tweeting your questions to @SIOSTech using #Clustering101 and of course bring your own questions and comments.

Register Now

High Availability (HA) Implementation Without Disruption or Delay

Date: June 24, 2014 — To be Rescheduled
Time: 10:00a PDT / 1:00pm EDT

About Clustering 101 Series

Clustering 101 is a webinar series hosted by Microsoft MVP, Dave Bermingham focused on addressing the numerous facets of clustering for high availability, data replication and any combination there of. This series will air monthly, the fourth Wednesday of the month at 10:00a PST / 1:00p EST.

About Dave Bermingham

David Bermingham is recognized within the technology community 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 director, technical evangelist at SIOS Technology Corp., has him focused on Microsoft high availability and disaster recovery solutions as well as providing hands on support, training and professional services for cluster implementations. David holds numerous technical certifications and draws from more than twenty years of experience in IT, including work in the finance, healthcare and education fields, to help organizations design solutions to meet their high availability and disaster recovery needs. Learn more at www.us.sios.com

Filed Under: Event posts, News and Events Tagged With: #SANLess Clusters for SQL Server Environments, Clustering 101, Dave Bermingham, Webinar

Press Release: The Human Impact of Ensuring SQL Server High Availability in Virtual Environments Is the Featured Topic of the Next SIOS Clustering 101 Webinar Series

May 20, 2015 by sios2017

SAN MATEO, CA – May 20, 2015 – SIOS Technology Corp. (www.us.sios.com), maker of SAN and #SANLess clustering software products, today announced Microsoft Clustering MVP and SIOS Senior Technical Evangelist Dave Bermingham will discuss the human impact of ensuring SQL Server high availability (HA) in virtual environments in the next session of its Clustering 101 webinar series.

Titled “Live Q&A – The Human Impact of SQL Server High Availability in Virtual Environments,” this webinar will be held on Wednesday, May 27 at 10:00 AM PDT / 1:00 PM EDT.  To register, please visit:  http://us.sios.com/2015-05-clustering101

To provide the HA protection mission critical applications require, SQL Admins may have to work closely with VM Admins. In this month’s Clustering 101 webcast, Microsoft MVP, Dave Bermingham will provide key insights to help both admin teams understand the implications of introducing HA to a SQL Server environment.

Dave Bermingham is recognized within the technology community as a high availability expert and has been honored by his peers by being elected to be a Microsoft MVP in clustering since 2010. Dave’s work as director, technical evangelist at SIOS Technology Corp. has him focused on Microsoft high availability and disaster recovery solutions as well as providing hands on support, training and professional services for cluster implementations. Dave holds numerous technical certifications and draws from more than twenty years of experience in IT, including work in the finance, healthcare and education fields, to help organizations design solutions to meet their high availability and disaster recovery needs. Learn more at http://us.sios.com

About Clustering 101

Clustering 101 is a webinar series hosted by Microsoft MVP Dave Bermingham focused on addressing the numerous facets of clustering for high availability, data replication and any combination thereof. This series will air monthly, the fourth Wednesday of the month at 10:00 AM PT / 1:00 PM ET. Check our events page for details: http://us.sios.com/about/news-events/

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.

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

Filed Under: News and Events, Press Releases Tagged With: Cluster MVP, Clustering 101, MVP, Q&A, Virtual Environments, Webinar

May 27, 2015: Live Clustering 101 Webinar: Live Q&A – The Human Impact of SQL Server High Availability in Virtual Environments

May 13, 2015 by Margaret Hoagland

To provide the high availability (HA) protection your mission critical applications require, your SQL Admins may have to work closely with VM Admins . In this month’s Clustering 101 webcast, Microsoft MVP, Dave Bermingham will answer your questions and provide key insights to help understand the implications of introducing HA to your SQL Server environment for you and your admin professionals.

You can participate before the event by tweeting your questions to @SIOSTech using #Clustering101 and of course bring your own questions and comments.

Register Now

Live Q&A about High Availability in the cloud: Bring Your Questions
Date: April 29, 2014
Time: 10:00a PDT — 1:00pm EDT

About Clustering 101 Series

Clustering 101 is a webinar series hosted by Microsoft MVP, Dave Bermingham focused on addressing the numerous facets of clustering for high availability, data replication and any combination there of. This series will air monthly, the fourth Wednesday of the month at 10:00a PST / 1:00p EST.

About Dave Bermingham

David Bermingham is recognized within the technology community 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 director, technical evangelist at SIOS Technology Corp., has him focused on Microsoft high availability and disaster recovery solutions as well as providing hands on support, training and professional services for cluster implementations. David holds numerous technical certifications and draws from more than twenty years of experience in IT, including work in the finance, healthcare and education fields, to help organizations design solutions to meet their high availability and disaster recovery needs. Learn more at www.us.sios.com

Filed Under: Event posts, News and Events Tagged With: #SANLess Clusters for SQL Server Environments, Clustering 101, Q&A, SQLServer, Virtual Server, VMware, Webinar

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