As more shops start their move to DB2 pureScale, we get asked if federation is supported with pureScale. The answer is yes, Federation Server as well as DB2's and InfoSphere Warehouse's built-in homogeneous federation all support pureScale as a data source. That's because pureScale is really just another DB2 from a federation perspective. In other words, Federation accesses pureScale just as it would any other kind of DB2 - as client application - which means the pureScale nature of the DB2 is transparent.
The following picture is an example of how federation works with pureScale:
Obviously, this is just one way federation could be configured. Federation Server doesn't have to run on a separate system. In fact, it could run on any system in this example. I only show it on a separate system to emphasize the fact that federation is running independetly of pureScale. Another point is that, if you only need to federate DB2 databases, you could use a DB2 or InfoSphere Warehouse as your federation server instead of the InfoSphere Federation Server product. (However, you will need to be at 9.7 FP3 or higher no matter which you use.)
The one thing you cannot do is turn pureScale 9.8 into a federated data sharing group and create nicknames. For example, the following is not possible with pureScale 9.8:
In this picture, federation is conceptually integrated into pureScale in such a way that each member could federate pureScale's data with data from other data sources.