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Threshold for number of SEP clients that can be upgraded at once

Created: 19 Apr 2013 | 8 comments

I have around 300 SEP clients running version 11.x that I am looking to upgrade to 12.x.  I know hardware and other items factor in, but is there a hard limit or recommended threshold for the number of clients that can be upgraded from SEPM doing a push?

Operating Systems:

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Brɨan's picture

All depends on how big your network pipe is to those sites. There is no specific limit.

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Mithun Sanghavi's picture


Ensure that there is enough disk space to perform the upgrade. For a successful SEPM upgrade, you should have approximately three times the size of the database free. For the free space required for the SEP client, consult the System Requirements.

Disk Space Management procedures for the Symantec Endpoint Protection Manager

Since you are planning to upgrade or migrate to Symantec Endpoint Protection 12.1.2, please take a look at the latest how-to article created by our very own SEP content council team.

Best practices for upgrading to Symantec Endpoint Protection 12.1.2

Upgrading or migrating to Symantec Endpoint Protection 12.1.2100 (RU2 MP1)

Hope that helps!!

Mithun Sanghavi
Associate Security Architect


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Rafeeq's picture

No such limitation. You need to set the no of concurrent deployments in the Push wizard.

Push Deployment Wizard - Standalone deployment app for SEP install packages

Ambesh_444's picture


Agreed with above comments,

There is no limit, Its totly depend on your network, And you have to dicide numbers of clients you are pushing through deployments Push wizard.

SEP 11.x to SEP 12.1 Upgrade process graphical overview

Thank& Regards,


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consoleadmin's picture

No, there is no limit to upgrade your systems. It's only depend on your network bandwidth.

Better option is that you can upgrade the client on weekend and in specific limit.


AJ_01's picture

Agree with Mithun, you can ensure that enough disk space available for upgrade



aaron0403's picture

I want to agree with everyone who mentioned network bandwidth.  We recently did a push upgrade to approximately 8,000 clients over a 4 night period from 11.x to 12.1.x.  I had set up schedules so the push would only happen from 6pm to 5am and it would distribute the upgrades over 4 days.  Every day I went in and modified the schedule so it would be one less day.  On the last day I modified the schedule to say 0 days - went from 2 days to 0 days underneath the assumption that since this was the last day 0 would be fine.  There was still approximately 1,600 clients that still needed the upgrade.  As soon as I clicked ok after modifying the schedule to 0 days the SEPM's immediately began pushing out the installation package to all 1,600 clients.  The 0 days overrode my timing schedule of 6pm to 5am - basically 0 days means emergency push.  I was watching the network traffic and saw the SEPM's hit 100% utilization on their gig links so I immediately backed out the 0 and put in a 2.  But about 600 clients were still downloading the 265MB package - brought our network to a halt for 11.5 minutes due to the flood of traffic going out from the SEPM's.  Just another learning opportunity....

In responce to your question.  I would recommend that you can upgrade your clients during the day or night between a 3 hour period.  Then have the reboot scheduled for later that night.  That should result in a single SEPM pushing out about 84GB during that 3 hour period - again you have to know the capacity of your network setup from the SEPM to the network core.  Hope this helps.

Brɨan's picture

Very helpful. Thanks a lot for sharing.

Please click the "Mark as solution" link at bottom left on the post that best answers your question. This will benefit admins looking for a solution to the same problem.