VMWARE vsphere 5.5 HA do the hosts need to be similar hardware?

VMWARE vsphere 5.5 HA do the hosts need to be similar hardware?

I have a client that wants to upgrade his servers. The question arose if their old server could function as a part of a new cluster? I have never setup a HA cluster in vmware and am unsure if it can be done if two hosts are completely different hardware/vendors.
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Wouter MakkinjeIT ManagerAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
No, the hosts do *NOT* need to be similar hardware.

In a VMware HA situation, VMs are restarted automatically on other available hosts. (they are not vMotioned e.g. Live Migrated!).

vMotion does not even need the same hardware, because you can enable EVC.
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asavenerCommented:
You can, but that does not mean that you should.

Vendors don't matter that much, but cluster members with unbalanced resources can definitely cause headaches.

Please read this article:  http://www.yellow-bricks.com/2014/02/19/dont-create-frankencluster-just-can/
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Wouter MakkinjeIT ManagerAuthor Commented:
Okay thank you for your answers.
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