NetApp has now released 3tb SATA disk drives for its DS4243. These 3tb disks require ONTAP 8.0.2 or later. You can read some more info here http://media.netapp.com/documents/ds-3096.pdf
I did some rough back of the napkin math. For a secondary controller I deploy 4 x 42RU racks per 6280 pair at the…