You will probably be storing several types of data that have different performance objectives and different management criteria. Some of your stored objects may need faster access time than others, and some may need backup copies, but others may not. Place objects that have differing characteristics in different collections. If the number of objects that differ is small, instead of creating a new collection, consider overriding the defaults by using explicit class names on the interface to OAM. Refer to Processing a store to an existing collection.