ESX 3.5 and ESXi 4.0 systems share the same LUN ?

[ksvm]

We have started upgrading to vSphere; just vCenter so far. We have not upgraded the ESX 3.5 servers yet, but are adding new ESXi 4 servers.

Can we expose the SAN disk to the 4.0 hosts that contain VMs running on 3.5, and provision new VMs for the ESXi 4 on the same disk?

Put another way, is there any change to vmfs or differences to VM structures that prevent new and old ESX hosts from sharing storage? Obviously we would not expect VM interchangability until we upgrade the ESX 3.5 hosts and VMs running on 3.5.

Thx

[AntonVZhbankov · Accepted solution]

Yes, you can share LUNs and provision new VMs on the same disk.

You can even VMotion VMs between 3.5 and 4.0 if VMs have hardware ver. 4 (all VMs created in 3.5 have).

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[AWo]

Yes , that is possible. It is even necessary if you want to move guests between your different hosts.

AWo

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[AndreTheGiant]

Put another way, is there any change to vmfs or differences to VM structures that prevent new and old ESX hosts from sharing storage?

VMFS version is a little diffent between ESX 3.5 and 4.0.

But are compatible witout problem.

Andre

[ksvm]

Thanks all.