<div>
The things you need to do in this order:<br />
- You can login to your VMWare acct and download the vSphere iso media. &nbsp;<br />
- Have a good backup prior to upgrading. <br />
- Verify that you current hardware on the vshpere HCL<br />
- Upgrade your Virtual Center Server<br />
- Upgrade your ESX Hosts<br />
- Connect to you VC or ESX host, download and upgrade your VI client<br />
- Connect to each guest OS and upgrade your vmware tools. 
</div>


The things you need to do in this order:
- You can login to your VMWare acct and download the vSphere iso media.  
- Have a good backup prior to upgrading.
- Verify that you current hardware on the vshpere HCL
- Upgrade your Virtual Center Server
- Upgrade your ESX Hosts
- Connect to you VC or ESX host, download and upgrade your VI client
- Connect to each guest OS and upgrade your vmware tools.

<div>
Oh...1 more thing I found EXTREMELY beneficial...upgrade tutorial videos. I would watch them..see:<br />
<a href="http://www.vmware.com/products/vsphere/upgrade-center/resources.html" rel="ugc nofollow">http://www.vmware.com/products/vsphere/upgrade-center/resources.html</a><br />
<br />
They are about 15mins or so long each and quite useful to 'see' how upgrades are done.<br />
<br />
Regards,<br />
~coolsport00
</div>


Oh...1 more thing I found EXTREMELY beneficial...upgrade tutorial videos. I would watch them..see:
http://www.vmware.com/products/vsphere/upgrade-center/resources.html [http://www.vmware.com/products/vsphere/upgrade-center/resources.html]

They are about 15mins or so long each and quite useful to 'see' how upgrades are done.

Regards,
~coolsport00

<div>
<div class="content wysiwyg-content">
Hi Guys,<br />
<br />
We want to upgrade our VMware 3.5 to 4.<br />
Since I don't really have much knowledge on VMware.<br />
<br />
I want to ask you what should I do, How, when, and what are the risk's for doing it.<br />
<br />
This is what we have:<br />
VMware Virtual Center 2.5.0 Build 147633<br />
VMware Infrastructure Client 2.5.0 Build 147633<br />
VMware ESX 3.5<br />
<br />
Can you please assist me?<br />
Thanks<br />

</div>
</div>


Hi Guys,

We want to upgrade our VMware 3.5 to 4.
Since I don't really have much knowledge on VMware.

I want to ask you what should I do, How, when, and what are the risk's for doing it.

This is what we have:
VMware Virtual Center 2.5.0 Build 147633
VMware Infrastructure Client 2.5.0 Build 147633
VMware ESX 3.5

Can you please assist me?
Thanks


VMware Upgrade

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Microsoft Virtual Server was a virtualization solution that facilitated the creation of virtual machines on the Windows XP, Windows Vista and Windows Server 2003 operating systems. Virtual machines are created and managed through a web-based interface that relies on Internet Information Services (IIS) or through a Windows client application tool called VMRCplus. Features included Linux guest operating system support, Virtual Disk Precompactor, symmetric multiprocessing (SMP), x64 host operating system support, the ability to mount virtual hard drives on the host machine and additional operating systems support, including Windows Vista, and a volume shadow copy writer.

Microsoft Virtual Server

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.