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Migration to vSphere 6

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Hi.

 

I currently have 3 Windows vCenters.

VC1 = 5.0

VC2 = 5.1

VC3 = 5.5

 

All hosts ESX 5+

Some VMFS-3 datastores.

 

We are spread over two data centres so I want to migrate to them all to two Windows v6 VCs in a single SSO domain, with each VC having its own external PCS (I really don't want to use a load balancer!).

 

I'm trying to ascertain the most seamless way to transition the migration with the minimum downtime and disruption to our clusters/VMs, but the upgrade options seem... limited.

 

My current thinking is to upgrade VMFS-3 to VMFS-5 on-the-fly, then (as we don't use vDS or vApps, or Resource Pools, etc.) to build a green field VC6 environment and simply remove hosts one-by-one and re-add them to the new VC6 environment and rebuild the cluster configurations.

 

I would be hugely grateful for anyone's input as to how best to approach this migration.


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