. There are 4 Controller options available for the SnapSAN S1000.  Installation and management are simple and straight-forward with your choice of single or dual controllers; iSCSI Fibre Channel or SAS connectivity and the ability to scale to 120TB. The SnapSAN S1000 delivers the perfect balance of price performance availability and features to meet your business's needs.The S1000 meets the critical needs for every business providing an affordable scalable and easy to manage solution without sacrificing performance or flexibility.  Capabilities include Dual Controllers with active failover Flexible Connectivity (choose from iSCSI FC or SAS) Windows Integration (MPIO and VSS) Online Capacity Expansion Snapshots and Dive Spin-Down reducing power consumption..