ThinkSystem DB720S Lenovo Network Switch Standalone Or 1U Rack Mount Enterprise Switch

Form factor

Standalone or 1U rack mount

Fibre Channel Ports

Switch mode (default): Minimum of 24 ports and maximum of 64 ports. Ports are enabled in increments of 8 ports up to 64 ports via
Ports on Demand (PoD) licenses; E_Ports, F_Ports, M_Ports, D_Ports, and EX_Ports.
* Up to 48 autosensing ports that support 32Gb or 64Gb SFP+ transceivers
* Up to 8 double density (DD) ports that support either SFP+ (32Gb or 64Gb) transceivers for a single connection, or SFP-DD
transceivers that each support two 64G connections, thus providing an additional 16 ports at 64Gb.

Access Gateway default port mapping: 56x SFP+ F_Ports, 8x SFP+ N_Ports.
The SFP+ ports are capable of auto-negotiating to 8, 16, 32, or 64Gb speeds depending on the SFP+ model and the minimum supported
speed of the optical transceiver at the other end of the link.

Scalability

Full-fabric architecture with a maximum of 239 switches

Certified maximum

4K active nodes; 56 switches, 19 hops in Brocade Fabric OS® fabrics

Performance

Non-blocking architecture with wire-speed forwarding of traffic:
* 8GFC: 8.5 Gb/sec line speed, full duplex
* 10GFC: 10.53Gb/s line speed, full duplex; 10Gb/s optionally programmable to fixed port speed.
* 16GFC: 14.025 Gb/sec line speed, full duplex
* 32GFC: 28.05 Gb/sec line speed, full duplex
* 64GFC: 57.8 Gb/sec line speed, full duplex