In this context, scanning refers to scanning for new updates. It checks the SUP and downloads any new update definitions. Rescanning is used to describe an activity totally within the client as it rescans for previous updates. This detects when older updates need to be applied or reapplied.
Scanning
- The schedule is set globally, in the Software Updates Client Agent Properties, General tab
- You can choose a simple schedule of once every X days, or a custom schedule
- The custom schedule allows you to control time of day as well as the interval
- This must be run on a client before new updates will be detected and can be deployed
- The easiest way to assure that is to set a schedule of running daily, during the middle of the night after the Synch would be completed
- If that imposes a load you don't want all the time, set it to daily just before Patch Tuesday and reset it to weekly after all machines have been scanned at least once
====Rescanning====
- The schedule is set globally, in the Software Updates Client Agent Properties, Deployment Re-evaluation tab
- You can choose a simple schedule of once every X days, or a custom schedule
- The custom schedule allows you to control time of day as well as the interval
- This is not needed frequently, weekly is probably good for most environments
- The load on the systems should be minimal