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muhfugen wrote:From what i've read on the forums (https://forums.starwindsoftware.com/vie ... f=5&t=3440), split brain can be an issue when using a 2 node HA configuration, when total network failure occurs between the two nodes. I was wondering if anything has been done to solve this issue in the past three years, such as being able to have a witness?
Do you know where I could find more information about configuring a dynamic witness in VSAN? I cant seem to find much documentation from google beyond forum posts and Geo Clustering PDF which mentions it in passing.anton (staff) wrote:dynamic witness (same way Windows Server 2012/2016 cluster works)
muhfugen wrote:Do you know where I could find more information about configuring a dynamic witness in VSAN? I cant seem to find much documentation from google beyond forum posts and Geo Clustering PDF which mentions it in passing.anton (staff) wrote:dynamic witness (same way Windows Server 2012/2016 cluster works)
wallewek wrote:Let me see if I understand this correctly.
Are you saying that a StarWind Free HA 2-node VSAN is currently susceptible to split-brain failure -- having both hosts coming up and running independently -- and there's nothing we can currently do about it? I.e., there's no witness/quorum functionality at the VSAN level in StarWind Free?
And are you saying that this functionality does exist in the paid-license version?
Is there a document somewhere to which you would refer me to clarify this? Any recommendations on how to prevent it, beyond simple redundancy?
Thanks for any clarification you could provide.
-- Ken
Which implies a primary/secondary or "quorum stick" (my term) approach.If data can`t be transferred through the synchronization channel StarWind checks the availability of the second node through the alternate network interface, and shuts down the secondary node in case of synchronization channel failure.