The SEPM must have previous content revision downloads in order to create a "delta", or differential, capable of updating a client from its current content version to the most recent version of that content being stored on the SEPM.  The value of deltas is that content revisions are kept to a minimal size as they are sent across the network. 

To determine how many content revisions you should keep consider the following:

• For the majority of your clients how often do they communicate with their SEPM?

• Historically, how long have your clients had to go without communication with their SEPM?

• What disaster recovery scenarios must you consider and of what duration?

 
The number of content revisions to keep should depend on the need to balance network bandwidth usage with the amount of hard drive storage availability on the SEPM. This setting should be made with the specific network environment's requirements and limitations in mind.

Technical Information

To determine how long it will take to perform a content distribution update in a best case scenario, use the following formula of:

 Concurrent Connections x Content Size* ÷ Available Bandwidth = Content Distribution Time
*Average Content Size = 70-100kb
 
                                                Example Content Distribution Time using 70kB update.
 

  The above table assumes the entire network was dedicated to the update

 *Note that latency can also be affected by network utilization and protocol overhead.

Definition Storage