I'm looking to upgrade my current SEPM running 12.1.4 from Windows 2003 to Windows 2012. I plan to do an upgrade of the OS to 2012 over the top of 2003.

Anything I should be aware of when doing this in regards to the SEPM configuration? Will I have to do a repair on the SEPM install? Anything default in the Windows 2012 build that SEPMs don't play nicely with?

Also my current setup is two Windows 2003 servers both running SEPM off of a single SQL DB which resides on a separate server. Any issues with upgrading one to Windows 2012 and then say a week or two later upgrading the second one to Windows 2012?

One other question in regards to this upgrade.

Since my servers are VMs I'm thinking about upgrading the performance on them at the same time to assist with the current load on these SEPMs. Currently both are running 2 - Xeon X5650 2.66GHz processors and 3GB or RAM. Both of these servers share the load of 15000 nodes checking into them and at sometimes can barely keep up. What would everyone suggest in terms of upgrading performance? At the moment I'm thinking 4 - Xeon X5650 2.66GHz and 8GB of RAM for each server. Do you think this will be sufficient?

Thanks,

Mike

You can use disaster recovery method

How to move Symantec Endpoint Protection Manager 12.1 from one machine to another

I would upgrade both at same time. 8gb should be plenty. Recommended min is 4

HI,

Check this articles

How to move SEPM from one server to another server

https://www-secure.symantec.com/connect/articles/hot-move-sepm-one-server-another-server

System Requirements for Symantec Endpoint Protection, Enterprise and Small Business Editions, and Network Access Control 12.1.4

check this

Symantec Endpoint Protection Sizing and Scalability Best Practices White Paper

Hello,

There are few things you need to understand.

In your case, you are performing - 

1) Upgrade of Windows on 2 SEPM servers. 

2) These are virtual machines.

3) SQL is on a different server.

Assuming, you are keeping the host name and Ip address as same.

When upgrading to the Windows on the machines, it is always recommended to uninstall the SEP installed on these machines, check this Article: http://www.symantec.com/docs/TECH197095

Secondly, before upgrading the Operating system, you would require to perform the disaster recovery steps. Check this Article: http://www.symantec.com/docs/TECH160736

and 

since these machines are virtual machines, check these articles - 

Check these Articles:

Symantec Endpoint Protection 12.1 - Virtualization Best Practices

http://www.symantec.com/docs/TECH173650

Symantec Endpoint Protection 12.1 - Non-persistent Virtualization Best Practices

http://www.symantec.com/docs/TECH180229

Symantec Endpoint Protection 12.1 & Virtualization

http://www.symantec.com/docs/TECH194383

Using Symantec Endpoint Protection in virtual infrastructures

http://www.symantec.com/docs/HOWTO8106

Does Symantec Endpoint Protection 12.1 support VMWare vShield?

http://www.symantec.com/docs/TECH175568

SEP 12.1.2 Best Practices on Citrix Virtual Desktops ( Provisioning Services) -Part 1

https://www-secure.symantec.com/connect/articles/sep-1212-best-practices-citrix-virtual-desktops-provisioning-services-part-1

SEP 12.1.2 Best Practices on Citrix Virtual Desktops ( Provisioning Services) -Part 2

https://www-secure.symantec.com/connect/articles/sep-1212-best-practices-citrix-virtual-desktops-provisioning-services-part-2

Hope that helps!!

All great information thank you very much!