Forum Discussion
Express Updates - SCCM server side payload
Express updates can definitely be large, which is why we recommend having a lot of free disk space on the servers before enabling them.
The reason that these are large: They contain "deltas" for every patched file in the update, for every existing version of the file that has been released. Imagine NTOSKRNL.EXE. It might be patched each month. So after 12 months, the express update would contain 12 different deltas for that one file. Multiply that for all the different files that have been patched, especially all of those that have been patched multiple times, and that's the reason for the large size.
Express updates can definitely be large, which is why we recommend having a lot of free disk space on the servers before enabling them.
The reason that these are large: They contain "deltas" for every patched file in the update, for every existing version of the file that has been released. Imagine NTOSKRNL.EXE. It might be patched each month. So after 12 months, the express update would contain 12 different deltas for that one file. Multiply that for all the different files that have been patched, especially all of those that have been patched multiple times, and that's the reason for the large size.