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The EMC ® Connectrix ® DS-4900B Fibre Channel switch combines 64 ports of 4 gigabit-per-sec- ond (4 Gb/s) performance in a 2U rack with ports-on-demand scalability and high availability to support mission-critical storage area networks (SANs). The DS-4900B provides an affordable, flexible solution that can help reduce the size of the SAN footprint and simplify management by lowering the total number of domains through consolidation. The DS-4900B base model con- sists of 32 ports and scales in 16-port increments to 48 and 64 ports. The switch also supports ISL Trunking of up to eight 4Gb/s ports per ISL Trunk, for a single Trunk of up to 32 Gb/s. For complete investment protection, the DS-4900B supports 1, 2, and 4 Gb/s speeds, is backwards- compatible, and can support distance deployments of up to 35 km. The DS-4900B meets the needs of a broad range of networked storage applications, including storage consolidation, backup and restore, and includes a rich optional feature set. System Architecture Fibre Channel Standards FC-PH; FC-PH-2; FC-PH3; FC-GS-2; FC-FLA; FC-FG; FC-SW3 Fibre Channel Ports Base model of 32 ports; scales to 48 and 64 ports with ports-on-demand licenses Cascade Maximum Up to 24 switches, 3 hops Performance Full line-speed switching of up to 4.25 Gb/s Switch Bandwidth 512 Gb/s end-to-end Switch Core Non-blocking design Fabric Latency <2.4 μsec with no contention, cut-through routing at 4 Gb/s Maximum Frame Size 2,112 byte payload Classes of Service Class 2, Class 3, Class F Port Types E_Port, F_Port, FL_Port Media Types Small form-factor pluggable (SFP) laser Short-wave up to 500 meters (1,640 feet) Long-wave up to10 km (6.2 miles), and 35 km (21.8 miles) Fabric Services Simple Name Server, Registered State Change Notification (RSCN), Brocade Advanced Zoning, Brocade Web Tools, Full Fabric Connectivity Hot-Swappable Components Three hot-swappable fans for N+1 redundancy; two hot-swappable power supplies for N+1 redundancy. Hot-swappable optics. Optional Features ISL Trunking, Extended Fabrics, Performance Monitor, Fabric Watch, and an Enterprise Bundle which includes all four features. Long-wave optical media for distances up to 10 km or 35 km, 16-port upgrades to increase port count to 48 or 64 ports. Installation Options Installation into a customer-supplied EIA-310D-compliant rack is permitted. Specification Sheet EMC Connectrix DS-4900B Switch
