NetApp has announced new version of their storage operating system, Ontap 9. One of the improved features is Advanced Drive Partition V2 (ADPv2).
With ADP you can slice SDDs or HDDs into two partitions, one for root aggregates and one for data aggregates. This means that you don’t have to reserve separate drives for root aggregates, instead you can use a small “slice” of disk for root aggregate and use remaining “slice” for data aggregates. By using ADP the overhead related to root aggregates is smaller and you will get more usable space for data.