What is a rollup? Exchange 2007 SP1 Rollup 1

One of the more frequent questions about Exchange 2007 is the new update technology, the rollup:

Rollup is a collection of hotfixes and Exchange system updates that apply to the entire product. While in the past, Exchange hotfixes included updates for the affected binaries/libraries only, they did not update the product as a whole. The new “rollups” do just that, they provide all the hotfixes affecting Exchange 2007 deployment. Much like service packs, the rollups contain all the hotfixes and patches Microsoft has published and bring the Exchange deployment to an identifiable state (ie, tell me the rollup not a list of all the hotfixes you installed). The schedule is also pretty reliable, every 6-8 weeks.

And speaking of the devil, the first rollup for Exchange 2007 SP1 is out and it fixes the issue of store.exe allocating 100% of CPU. This is a common thing in the 2007 world, there are never enough resources so if you don’t choose to throttle it the Exchange 2007 will allocate so many resources that you’ll hardly be able to launch the management console without snapins timing out.

So, in review: Exchange 2007 SP1 Rollup 1, Exchange 2007 RTM Rollup 6.