Applies to ONTAP 9 Answer It is perfectly safe to reduce the size of a NAS volume. This is because ONTAP will not allow to reduce the size of a volume to a point smaller than the amount of data it con...Applies to ONTAP 9 Answer It is perfectly safe to reduce the size of a NAS volume. This is because ONTAP will not allow to reduce the size of a volume to a point smaller than the amount of data it contains. Additional Information Volume should not be shrinked to bare minimum as it may get full and go offline if it does not have space to accomodate any new data Volume modify