Upgrade and migration of 3.5.0upd0 to 4.0upd1 and shared storage iSCSI

Hi people,

I've got 2 ESX host: Alpha and beta. Two of them are connected to a cabin of iSCSI with some created shared storage drive (all VMFS3 v3.31). And both had ESX 3.5.0 update0

I migrated all the VMS running in the Alpha host for shared storage and made host Beta to run (clones cold or simply reassign files). Then I bâtait Alpha from scratch and I installed vSphere 4.0 in it. I also created in its local storage space bit a new virtual machine with vCenter4 inside. It has worked well.

Then I had to migrate Beta and its virtual machines, too. I first tried to manage the host with vCenter4, but it is not backward compatible.

So I'll use the host update utility to upgrade beta I saw in a video tutorial, but my doubts are...

      • Option 1:

Disable all virtual machines managed in host Beta.

Configure the iSCSI client in Alpha, add storage shared cabin and try to manage the virtual machines already extinct. This reduces the time to downgrade.

Upgrade Vmware Tools in the virtual machines (v4 to v7 type VM). Required reboots.

Upgrade host Beta (with no SMV in there and unplug the cable of iSCSI) vSphere4.

Connect and configure the iSCSI version beta customer.

Manage the host with the new vCenter4 Beta.

Configure the vMotion, DRS etc. in both hosts.

      • Option 2:

Disable all virtual machines managed in host Beta.

Upgrade host Beta (with no SMV in there and unplug the cable of iSCSI) vSphere4. Downgrade time increases.

Connect and configure the iSCSI version beta customer.

Upgrade Vmware Tools in the virtual machines (v4 to v7 type VM). Required reboots.

Manage the host with the new vCenter4 Beta.

Configure the vMotion, DRS etc. in both hosts.

Which option is the best? Maybe is it possible to apply a third? What do you think?

Thanks in advance.

without loss of performance?

Yes. VM with v4 works very well.

The only problem is that you lose some new features, like the new drivers and FT.

Note also that Standalone VMware Converter 4.x can also convert between v4 and v7 and vice versa.

André

Tags: VMware

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