Modern versions of AIX have three types of Volume Groups: Original, Big, and Scalable.
In my opinion, for any new volume groups you are creating you should always use scalable unless you will have the need to export the volume group and import it on very old versions of AIX. Scalable volume groups have very few limitations when compared to big and original volume groups. Unfortunately there are a ton of original and big volume groups out there in the world, and it can be very tricky to understand their limitations. The main... [More]