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Posted by Sergey Sanduliak on January 3, 2018
What’s Split Brain and how to avoid it like the plague?

In this article, we will discuss the split brain issue, and different approaches to prevent it from happening. The situation when communication loss between the cluster nodes is caused by network connection problems is called network partition, which can lead to split brain. According to Wikipedia, split brain is a computer term, based on an analogy with the medical split-brain syndrome. It can be a real horror for a system administrator to handle the consequences of a split brain.

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Posted by Ivan Talaichuk on October 19, 2017
StarWind Maintenance Mode Overview

Howdy, folks! I would like to start my tale with a little backstory regarding usefulness which the “maintenance mode” brings to us. And in order to do that, I’ll start from the times when updates have led to the downtime for production. That’s not a secret for anyone that any production environment sometimes needs to be maintained. It could either be a software update or a hardware reconfiguration. To do this, the administrator should stop the production server for a certain period of time, and this may affect the reliability of the production environment. For example, the fault tolerance level can be decreased, as well as the performance. This is especially critical for small infrastructures which consist of 2 nodes.

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Posted by Askar Kopbayev on March 3, 2017
vSphere 6.5: HA & DRS improvements. Part 2

In Part II we will review the remaining improvements in vSphere Availability and Resource Management brought by vSphere 6.5.

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Posted by Vladislav Karaiev on February 17, 2017
Storage HA on the Cheap: Fixing Synology DiskStation flaky Performance with StarWind Free. Part 3 (Failover Duration)

We are continuing our set of articles dedicated to Synology’s DS916+ mid-range NAS units. Remember we don’t dispute the fact that Synology is capable of delivering a great set of NAS features. Instead of this, we are conducting a number of tests on a pair of DS916+ units to define if they can be utilized as a general-use primary production storage. In Part 1 we have tested the performance of DS916+ in different configurations and determined how to significantly increase the performance of a “dual” DS916+ setup by replacing the native Synology DSM HA Cluster with StarWind Virtual SAN Free.

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