High-density, compact form factor
Cisco Nexus 6000 Series Switches are designed to deliver high-density 40 Gigabit Ethernet in an energy-efficient, compact form factor. They offer a comprehensive integrated Layer 2 and Layer 3 feature set. That makes them ideal for space-constrained, high-density, and high-performance deployments in traditional, virtualized, and cloud environments
Features and benefits

High scalability and performance
These switches feature up to 384 10-Gbps or 96 40-Gbps line-rate, and Layer 2 and Layer 3 ports in four-rack units (4RU). They also have unified ports for LAN and SAN convergence.

Efficient Fabric Extender architecture
Simplify and improve efficiency with a single point of management. The switch also features an advanced toolkit with buffer and latency monitoring, Dynamic Fabric Automation, and PowerON Auto Provisioning for fabric automation.

Programmability
It supports Python scripting, TCL scripting, and the Cisco One Platform Kit (onePK, supported in future software releases).