To support the differing security, backup, performance, and data sharing needs of your users, you can group the physical data storage resources on your storage system into one or more aggregates. You can then design and configure these aggregates to provide the appropriate level of performance and redundancy.
Each aggregate has its own RAID configuration, plex structure, and set of assigned disks or array LUNs. The aggregate provides storage, based on its configuration, to its associated FlexVol volumes.
For information about best practices for working with aggregates, see Technical Report 3437: Storage Subsystem Resiliency Guide.