Configure Live Migration in Hyper-V clusters
Posted by Romain Serre on March 28, 2018
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In part of my job, I audit some Hyper-V clusters to remediate issues such as Live Migration. Most of the time, Live Migration part is not well configured. For example, the wrong network is selected or authentication is left to CredSSP. In this topic, I’ll show you how I configure Live Migration in Hyper-V clusters (S2D or not).

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The main features of 2016 Failover Cluster
Posted by Vitalii Feshchenko on February 1, 2018
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storage-qos

In our support work very often we face different environments. They can range from three VMs to a hundred of those, with the number of nodes from two to ten.

Today, I will tell you about the main features of Failover Cluster 2016, which are applicable to any environment.

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Take a look at Storage QoS Policies in Windows Server 2016
Posted by Didier Van Hoye on November 21, 2017
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Introduction

In Windows Server 2016 Microsoft introduced storage Quality of Service (QoS) policies.  Previously in Windows Server 2012 R2, we could set minimum and maximum IOPS individually virtual hard disk but this was limited even if you could automate it with PowerShell. The maximum was enforced but the minimum not. That only logged a warning if it could be delivered and it took automation that went beyond what was practical for many administrators when it needed to be done at scale. While it was helpful and I used it in certain scenarios it needed to mature to deliver real value and offer storage QoS in environments where cost-effective, highly available storage was used that often doesn’t include native QoS capabilities for use with Hyper-V.

status of the flow via PoweShell

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Nested Virtualization in Azure with StarWind Virtual SAN. Part 1: Introduction
Posted by Dmytro Malynka on September 12, 2017
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At Microsoft Build 2017, the Nested Virtualization support in Azure has been announced. Now you can enable nested virtualization using the Dv3 and Ev3 VM sizes – not a wide variety, but Microsoft is going to expand the support for more VM sizes in the upcoming months.

Azure Nested Virtualization diagramm

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Why do we always see Responder CQE Errors with RoCE RDMA?
Posted by Didier Van Hoye on June 2, 2017
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Why do we always see Responder CQE Errors with RoCE RDMA?

Anyone who has configured and used SMB Direct with RoCE RDMA Mellanox cards appreciates the excellent diagnostic counters Mellanox provides for use with Windows Performance Monitor. They are instrumental when it comes to finding issues and verifying everything is working correctly.

Many have complained about the complexity of DCB configuration but in all earnest, any large network under congestion which needs specialized configurations has challenges due to scale. This is no different for DCB. You need the will to tackle the job at hand and do it right. Doing anything at scale reliable and consistent means automating it.  Lossless Ethernet, mandatory or not, requires DCB to shine. There is little other choice today until networking technology & newer hardware solutions take an evolutionary step forward. I hope to address this in a future article. But, this I not what we are going to discuss here. We’ve moved beyond that challenge. We’ll talk about one of the issues that confuse a lot of people.

Responder CQE errors report after virtual machines migration from Hyper-V cluster

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