If you no longer need a volume and the data it contains, you can destroy the volume to free its space for other data.
When you destroy a FlexVol volume, all the disks included in its containing aggregate remain assigned to that containing aggregate, although the space associated with the volume is returned as free space to the containing aggregate.
When you destroy a traditional volume, however, you also destroy the traditional volume’s dedicated containing aggregate. This converts its parity disk and all its data disks back into hot spares. After the disks have been zeroed, you can use them in other aggregates, traditional volumes, or storage systems.
If you access your storage system using NFS, update the appropriate mount point information in the /etc/fstab or /etc/vfstab file on clients that mount volumes from the storage system.