940 is now End of Support
Please note that IDS 9.40 [All Versions] is now "End of Support". If you are planning on remaining on 9.4, you should start discussingwith your IBM Representative regarding purchasing a service extension else please consider upgrading to the current IDS release.
IDS 11.50.xC4 has several new features like storage optimization and warehouse that you can take advantage of.
The upgrade portal is a good resource for your upgrade plans and is a definite recommendation. If you need any additional assistance or have a quick question, please feel free to email getIDS11@us.ibm.com.