Advise on vCenter upgrade version

We are currently running 5.0 U2 and are looking to get more up to date.

We don't necessarily want to jump right up to 5.5

Any convincing arguments why we should?  Any why we shouldn't?

Is 5.4 stable enough to trust production, or did 5.5 address major concerns?

We of course can look at all the release notes for each version, but wanted to get the feeling of the community.
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We run 5.5 on most of our infrastructure and we are really happy with it. Whether or not you can make an argument depends on what new features you plan on using. One of the biggest reasons we upgraded was to break the 2TB VMDK size limit. If this helps, I hope you can mark it as an accepted solution. :-)

• vSphere ESXi Hypervisor Enhancements
––Hot-Pluggable SSD PCI Express (PCIe) Devices
––Support for Reliable Memory Technology
––Enhancements for CPU C-States
• Virtual Machine Enhancements
––Virtual Machine Compatibility with VMware ESXi™ 5.5
––Expanded vGPU Support
––Graphic Acceleration for Linux Guests
• VMware vCenter Server Enhancements
––VMware® vCenter™ Single Sign-On
––VMware vSphere Web Client
––VMware vCenter Server Appliance™
––vSphere App HA
––vSphere HA and VMware vSphere Distributed Resource Scheduler™ (vSphere DRS)
Virtual Machine–Virtual Machine Affinity Rules Enhancements
––vSphere Big Data Extensions
• vSphere Storage Enhancements
––Support for 62TB VMDK
––MSCS Updates
––vSphere 5.1 Feature Updates
––16GB E2E support
––PDL AutoRemove
––vSphere Replication Interoperability
––vSphere Replication Multi-Point-in-Time Snapshot Retention
––vSphere Flash Read Cache
• vSphere Networking Enhancements
––Link Aggregation Control Protocol Enhancements
––Traffic Filtering
––Quality of Service Tagging
––SR-IOV Enhancements
––Enhanced Host-Level Packet Capture
––40GB NIC support

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Aravind SivaramanTechnical Subject Matter ExpertCommented:
Is 5.4 stable enough to trust production, or did 5.5 address major concerns?

There is no 5.4 available, What we have is 5.1 and its been there for more than year now and many customers are running. it successfully.

You can test both 5.1 and 5.5 in the test environment and look at the stability and the featured which you would be interested in and the proceed for the upgrade.

One common thing to note when upgrading to 5.1 or 5.5 is that you need to setup SSO first and then proceed with the other upgrade
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
At present I would hold off, going straight to 5.5., until they issues 5.5 U1.

Why not upgrade to 5.1 U1?
ServerNotFoundAuthor Commented:
Somehow a quick search brought up a few 5.4 articles (They were for vCenter CM).  Didn't look much further but I see that now.  

Thanks all.  I think for now we will hold off for U1.
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