sidVTG
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Enthusiast

Windows failover cluster- vsphere replication

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Hi,

Need help to replicate 2 node Microsoft cluster .  I know vSphere replication is compatible with virtual RDMs so will change physica RDMs to virtual, but the RDM SCSI controller of nodes have bus sharing (physical)  enabled. The  How do I replicate such clusters having SCSI bus sharing enabled, since vsphere replication does not support bus sharing

Thanks, waiting for some thoughts/work arounds

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rcporto
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vSphere Replication does not support MSCS, see: VMware KB: vSphere Replication FAQ

Does vSphere Replication support MSCS clusters?

vSphere Replication does not work with virtual disks opened in "multi-writer mode". MSCS cluster virtual machines are configured with virtual disks opened in "multi-writer mode," so vSphere Replication will not work with a MSCS configuration.

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Richardson Porto
Senior Infrastructure Specialist
LinkedIn: http://linkedin.com/in/richardsonporto

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rcporto
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vSphere Replication does not support MSCS, see: VMware KB: vSphere Replication FAQ

Does vSphere Replication support MSCS clusters?

vSphere Replication does not work with virtual disks opened in "multi-writer mode". MSCS cluster virtual machines are configured with virtual disks opened in "multi-writer mode," so vSphere Replication will not work with a MSCS configuration.

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Richardson Porto
Senior Infrastructure Specialist
LinkedIn: http://linkedin.com/in/richardsonporto

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sidVTG
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Richard,

Thanks for replying. I am currently developing a proof of concept to replicate such MSCS  machines. I read that MSCS can work even with scsi sharing mode set to "none" (MS Clustering and SCSI bus sharing). Can you highlight what seetings needs to changed to get this config working. We have test machines and would like to explore all options/ workarounds to meet the DR requirement.

Thanks

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vbrowncoat
VMware Employee
VMware Employee

The replicate MSCS VMs (because they use physical RDMs) you need array based replication.

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sidVTG
Enthusiast
Enthusiast

gs_khalsa, thanks for your answer and apologies for late reply!

One question, Does Recover point for VMs support MSCS (shared rdm) replication ? What will the best software based solution for our requirement

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vbrowncoat
VMware Employee
VMware Employee

Edit:

I don't know and I couldn't find out from their website. Their website reads:

  • Replicate VMs (VMDK and RDM) locally and remotely

My guess is they don't support physical RDMs (because of the nature of physical RDMs) but I could be wrong

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sidVTG
Enthusiast
Enthusiast

Thanks for looking into it. MSCS clustered vms with shared physical bus sharing config is really painful to replicate / migrate over. Let me know if you have  any ideas. We are able to configure them with virtual RDMs up till now.

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NN20
Contributor
Contributor

Hi, I need to replicate MSFC VMs without pRDMs, please let me know if there any steps to be followed, reference articles etc,.

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vbrowncoat
VMware Employee
VMware Employee

Next time I recommend posting a new thread when you have a new question: 

https://docs.vmware.com/en/Site-Recovery-Manager/8.4/com.vmware.srm.admin.doc/GUID-3EBBD9DA-CD14-45B... 

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