You might want to use a storage system strictly as a system that contains backed-up data. If you do this for a storage system that is not optimized as a backup system, you use more transfer resources than you would for a system that is optimized as a backup system, such as the R200 system.
You can minimize the number of transfer resources a storage system requires by using the Nearstore Option license to convert your storage system to a NearStore system.
The following are requirements you must meet before you can use the Nearstore Option license:
The storage system must be a FAS3000 series or FAS6000 series system.
The version of Data ONTAP software must be 7.1 or later.
If you will be using the SnapVault feature, the storage system must have a SnapVault secondary license enabled.