Auto upgrade?

are the clients in different subnet or same ? followed best practice?

Best practices for upgrading to Symantec Endpoint Protection 12.1.2

how is the upgrade being done?
what's the existing version ? and the one you goiong to upgrade?

have you used the basic content ( no definition) in package.

Hi,

Could you please tell me that  what Process is taking the highest CPU & memory usage and how much?

Is the SEPM performing any aother activity other than being a SEPM server?

Is there a Network application which accessing the network continously?

FOR BEST PRACTISE.

https://www-secure.symantec.com/connect/articles/s...

for general migraiton steps to 12.1 ru2 have a look here:

Upgrading or migrating to Symantec Endpoint Protection 12.1.2 (RU2)

http://www.symantec.com/docs/TECH197426

In order to reduce traffic during the client upgrade you may want to push only the package with basic content to the target machines:

How to export Symantec Endpoint Protection (SEP) client install packages without any definitions or package with Basic Content.

http://www.symantec.com/docs/TECH178698

Hello,

When a Package is being pushed from the SEPM to the client machines, you would surely see a network activity.

Are these clients on WAN network?? Check these Articles:

Best practices when deploying Symantec Endpoint Protection client package over saturated 64k WAN links.

http://www.symantec.com/docs/TECH132352

Secondly, I hope the correct Exclusions are created in SEPM for SAP, check this Article:

What scan exclusions could be applied in Symantec Antivirus or Symantec Endpoint Protection on a server running SAP?

http://www.symantec.com/docs/TECH134382

Here are the - Best practices for upgrading to Symantec Endpoint Protection 12.1.2

Hi,

Auto upgrade should not slow the network. SEPM won't upgrade all the clients at a same time.

It would upgrade only 10 clients at a time. Also you can schedule upgrade time during non production hours.

Have you tried to check performance after stopping auto upgrade?

If you have limited number of client then use CDW method & deploy new package during non production hours.

As everyone said always follow the best practice

Best practices for upgrading to Symantec Endpoint Protection 12.1.2

Hi,

I followed the best practices only..i just deployed only for one IP range for that itself so many problems came so i stopped upgrading others