Applies to ONTAP 9 Answer aggr add is an abbreviation for the aggregate add-disks command, and they have the same functionality. Both commands are used to add disks to a storage aggregate. Abbreviatio...Applies to ONTAP 9 Answer aggr add is an abbreviation for the aggregate add-disks command, and they have the same functionality. Both commands are used to add disks to a storage aggregate. Abbreviations are typically used to simplify commands and make them easier to input and remember. Additional Information storage aggregate add-disks