VMware Upgrade from v5.0 to v5.5

We have four of Vphere hosts in V 5.0 in cluster mode. Vcenter in one of the VM running in windows 2008 R2. Would like to upgrade to v5.5. What are the steps?. Anything need to be taken care special.
sumod_jacobSenior IT ManagerAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, I would personally wait for 5.5 U1! There are many issues and errors with 5.5 at present, unless you need any specific features, wait for U1.

But, if you want to proceed, first....you will need to check if your servers are on the HCL.

Check the VMware HCL (Hardware Compatability Lists) here


1. Your servers need to be on the HCL
2. You need to upgrade vCenter Server from 5.0 to 5.5. (this often fails!)
3. Upgrade Servers from 5.0 to 5.5.


vSphere 5.5 is here! – KBs you need to know about

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Nick RhodeIT DirectorCommented:
As already stated wait for U1 for there have been many little annoying issues with 5.5.  Also when I upgraded I had to rebuild my vCenter Server which is not really a problem to recreate it fresh and maybe they will have it fixed in 5.5 U1 so keep that in the back of your mind.
sumod_jacobSenior IT ManagerAuthor Commented:
When do this U1 will release, any specific date?..

 Vcenter cannot do inplace  upgrade from v5.0?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
At present there no time scales, for U1, I would estimate < 6 months!

Why are you upgrading?
at this present time?

You should be able to complete In-place Upgrades from vCenter 5.0 to 5,1 or 5.5.

But at present, we are seeing at least 4 clients a week with issues, and at least once a week, a member posts on EE, I've upgraded my vCenter Server from 5.0 to 5.1, 5.5, and I cannot login in, vCenter Server Service does not start, etc etc

So, please assess this Risk!
sumod_jacobSenior IT ManagerAuthor Commented:
We are going to have windows 2012 servers for our new site, which current ESXi 5.0 does not support. The only reason is rushing to upgrade. V5.1 does, since 5.5 is released plan to go for latest version..

Any other suggestions
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I'm sorry you are ill advised.

Microsoft Windows 2012 and Windows 2012 R2 is supported from 5.0 U2

HCL is here


You may not be at 5.0 U2, and it's an easier upgrade from 5.0 U0 to 5.0 U2.

Inplace upgrade works from vCenter Server 5.0 U0 to 5.0 U2.

and updates work from 5.0 u0 to u2 ESXi.

So if this is your only reason, you could stay on 5.0 U2 a little longer!
sumod_jacobSenior IT ManagerAuthor Commented:
VSphere 5.0 SU2 is showing Windows server 8 (64 bit) instead of windows Server 2012 (64 bit), is it normal?.

Created a windows 2012 templates in ESxi 5.1 and Deployed VM from templates in Esxi 5.0 is working fine without SU2. I don't know will it create issue in future.. Any idea?
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, this is completely normal. Originally Server 2012, was known as Windows 8 Server!

If the VM starts, should not be any issues.
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