VMWare Fault Tolerant VMs and StarWind VSAN


I'm trying to build a 2 node VMWare cluster with StarWind VSAN to support Fault Tolerant VMs. Has anybody had any success with this? We need virtual machines to  remain on-line during fail-over ( no restart).  The Vsphere Fault Tolerance provides this functionality, but only on hardware SAN . Their VSAN does not support FT ( according to their support) , plus it requires minimum 3 nodes. I'm wondering if somebody has tried StarWind VSAN to provide real Fault Tolerance ( not High Availability, when VM restarts during fail-over)
AlexNovikovIntegrated Security Systems Engineer (Center of Exellence) Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Have you considered using Failover Clustering instead of VMware FT, do you have a VMware vSphere license for VMware FT ?
AlexNovikovIntegrated Security Systems Engineer (Center of Exellence) Author Commented:
I tried 2 node Windows 2012R2 Hyper-V Cluster. Unfortunately  during unexpected fail-over (host shutdown) VMs restart on backup node. This takes more than a minute of downtime. The applications that we run on VMs  are not cluster-aware. We decided to try VMWare vSpere FT as they advertise seamless failover, via replicating memory state between hosts. There are some limitations, like max 4 Virtual CPUs , etc. We dont have license yet but consider to buy vSpere Enterprise Plus if FT works on StarWind SAN. We dont have budget for hardware SAN.
Thank you
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I was actually referring to Microsoft Failover Clustering of VMs, not Hyper-V.

but if you apps are not Cluster Aware, you want to look at Double Take HA! (seamless!)


as for your issue with Starwind vSAN it does not support FT.
AlexNovikovIntegrated Security Systems Engineer (Center of Exellence) Author Commented:
Thank you, I meant Microsoft Fail-over VM Cluster . In my tests I manually moved VM s from one host to another without any interruption services on these VMs. However if I shut down one host, the VM restore on secondary would start from fresh boot.  I looked at Double Take HA videos and white papers, looks like their   solution has also  a delay during unexpected shut down of one host . It seems that only application HA does not require VM reboot...  Looks like VMWare FT is the only solution... I may need to start looking for cheap SAN/NAS
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It depends on how much uptime you really require.

Also look at the caveats with VMware FT. Is does not protect you against a storage failure, or OS failure.

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