The IBM® System Storage® N6220 storage controllers are designed to interoperate with products capable of data transmission in the industry-standard iSCSI, CIFS, FCP, FCoE, and NFS protocols. Supported systems include the IBM eServer System p®, System i® (NFS only), System x®, and System z® (NFS only) servers.
The N6220 systems consist of Model C15, Model C25, Model E15, Model E25, and associated software. All models can be configured, via optional features, to be either storage controllers or gateways. Dual-node configurations include Clustered Failover (CFO) support (via required feature), designed to provide failover and failback function, helping improve overall availability. All N6220 models must be mounted in a standard 19-inch rack. None of the N6220 models include storage in the base chassis.
See the Interoperability Matrix at the following web page for supported devices for your N series system.
www.ibm.com/systems/storage/network/interophome.html
For details about your system's configuration limits for Fibre Channel, Fibre Channel over Ethernet, and iSCSI, refer to the IBM System Storage N series Fibre Channel and iSCSI Configuration Guide for your version of Data ONTAP.