Sharing Datastores across two vCenter and migrating VM's

[speraincorrao]

Hi,

i have 2 clusters. One is in vSphere 5.5 (ClusA - 6 esxi) and the other is in vSphere 6.0 (ClusB - 6 esxi). Each cluster has own LUN's (we have EMC vnx 5500 storage) and own vCenter. The goal is migrate all the VM's from 5.5 to 6.0. I thought to present (share) the LUN's of ClusA to ClusB, so that i from vCenter_ClusA stop the VM's, remove them from inventory, and from the vCenter_ClusB add to inventory the VM's.

Questions:

Can i simply unregister the VM's fron 5.5 environment and register them in 6.0 environment?

Sharing LUN's between 2 cluster can be a problem? Consider after migration the ClusA will be shutdown.

Would this configuration cause datastore corruption because two separate vcenters accessing same datastore?

Thanks for the answer and sorry for my bad english!

Please help me!

[rcporto · Accepted solution]

You can share the datastores between the clusters/vCenter without problem. And about the unregister/register task, just remember to shutdown the VM on old cluster before unregister from inventory.

Here is a blog post showing that you can shared datastore between clusters/vCenters: With vSphere 5.0 and HA can I share datastores across clusters?

[speraincorrao]

Thanks for the answer Richardson!

I can go to sleep more peaceful.

[rcporto]

You're welcome and before sleep remember to mark answers as helpful or correct 🙂

[JinuV]

You can share one datastore across vcenter and across cluster