Dell PowerConnect B-DCX 4S

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  • Full fabric architecture of 239 switches

Certified maximum

  • 6000 active nodes; 56 switches, 19 hops in Brocade FOS fabrics; 31 switches, 3 hops in Brocade M-EOS fabrics; larger fabrics certified as required


  • 1.063 Gbit/sec line speed, full duplex; 2.125 Gbit/sec line speed, full duplex; 4.25 Gbit/sec line speed, full duplex; 8.50 Gbit/sec line speed, full duplex; auto sensing of 1, 2, 4, and 8GB port speeds; optionally programmable 1, 2, 4, and 8GB ports; 10.5 Gbit/sec line speed, full duplex

    Chassis bandwidth

    Brocade™ DCX-4S: 1.536 Tbit/sec per chassis (192 ports × 8 Gbit/sec data rate)

    Slot bandwidth

    256 Gbit/sec (data rate)

    ICL bandwidth

    256 Gbit/sec; 4 ICLs x 8 8Gb Fibre Channel connections
    ICL bandwidth is load-balanced using eight 8-port frame-based trunks and DPS

    Switch latency

    Locally switched ports 700 ns; blade-to-blade latency is 2.1 µsec

    Frame buffers

    2048 per 16-port group on 16/32-port blades and up to 2048 per 24-port group on 48-port blades, dynamically allocated

ISL Trunking

  • Frame-based trunking with up to eight 8GB ports per ISL trunk; up to 64 Gbit/sec per ISL trunk
    Exchange-based load balancing across ISLs with DPS included in Fabric OS

Port Attributes

  • Port types
    FL_Port (except FC8-48), F_Port, M_Port (Mirror Port), E_Port, EX_Port (Fibre Channel Integrated Routing); self-discovery based on switch type (U_Port); optional port type control

Maximum frame size

  • 2112-byte payload

Classes of Service

  • Class 2, Class 3, Class F (inter-switch frames)

Port Types

  • FL_Port (except FC8-48), F_Port, M_Port (Mirror Port), E_Port, EX_Port (Fibre Channel Integrated Routing); self-discovery based on switch type (U_Port); optional port type control

Data Traffic Types

  • Fabric switches supporting unicast, multicast (255 groups), and broadcast

Media Types

  • 4Gb: FC8-16, -32, and -48; FR4-18i; FA4-18; and FS8-18 blades require Brocade hot-pluggable, Small Form-factor Pluggable (SFP), LC connector; 4Gb Short-Wavelength Laser (SWL); 4Gb Long-Wavelength Laser (LWL); 4Gb Extended Long-Wavelength Laser (ELWL)

    8Gb: FC8-16, -32, and-48; and FS8-18 blades require Brocade hot-pluggable SFP+, LC connector; 8Gb SWL; 8Gb LWL

    10Gb: FC10-6 blades utilize non-Brocade hot-pluggable, 10Gb Small Form Factor Pluggable (XFP), LC connector; 10Gb SWL; 10Gb LWL

    Distance subject to fiber-optic cable and port speed

Fabric Services

  • Advanced Performance Monitoring (including Top Talkers); Adaptive Networking (Ingress Rate Limiting, Traffic Isolation, QoS); BB credit recovery; Brocade Advanced Zoning (default zoning, port/WWN zoning, broadcast zoning); Dynamic Path Selection (DPS); Extended Fabrics; Fabric Watch; FDMI; Frame Redirection; FSPF; Integrated Routing (FR4-18i SAN Extension blade not required for routing); IPoFC; ISL Trunking; Management Server; N_Port Trunking; NPIV; NTP v3; Port Fencing; Registered State Change Notification (RSCN); Reliable Commit Service (RCS); Simple Name Server (SNS); Virtual Fabrics (Logical Switch, Logical Fabric)


  • Management
    HTTP, SNMP v1/v3 (FE MIB, FC Management MIB), Telnet; Auditing, Syslog; Brocade Advanced Web Tools, Brocade Fabric Watch; Brocade Data Center Fabric Manager (DCFM) Enterprise (Brocade DCX, DCX-4S) or DCFM Professional (Brocade DCX-4S only), Brocade Fabric Manager (optional, FOS environments only), Brocade EFCM 9.x (optional), command line interface; SMI-S compliant; Administrative Domains; trial licenses for add-on capabilities

    DH-CHAP (between switches and end devices), FIPS 140-2 L2-compliant, HTTPS, IPsec, IP filtering, LDAP, Port Binding, RADIUS, Role-Based Access Control (RBAC), Secure Copy (SCP), Secure RPC, SSH v2, SSL, Switch Binding, Trusted Switch

    Management access
    10/100/1000 Ethernet (RJ-45) per control processor, in-band over Fibre Channel; serial port (RJ-45) and one USB per control processor module; call-home integration enabled through Brocade DCFM, EFCM, and Fabric

    Manager Diagnostics
    POST and embedded online/offline diagnostics, including RAStrace logging, environmental monitoring, non-disruptive daemon restart, FCping and Pathinfo (FC traceroute), port mirroring (SPAN port)


  • Single chassis: 192 (Brocade DCX-4S) 8Gb universal (E, F, FL, M, EX) Fibre Channel ports using up to eight 16-, 32-, or 48-port Fibre Channel blades

    Dual chassis: 384 (Brocade DCX-4S) 8Gb universal Fibre Channel ports; ICL ports (four per chassis, copper pin) connect two Brocade DCX-4S chassis.

    Special-purpose blades

    FC10-6 Blade provides six 10Gb Fibre Channel ports (up to eight blades)
    FR4-18i SAN Extension Blade provides Fibre Channel routing and SAN extension over IP networks (16 4Gb Fibre Channel ports and two Gigabit Ethernet ports per blade; up to eight blades and 64 EX_Ports)
    FA4-18 Application Blade is integrated with EMC RecoverPoint to provide continuous data protection (16 4Gb Fibre Channel ports and two Gigabit Ethernet ports per blade; up to four blades)
    FS8-18 Encryption Blade provides plug-in encryption of data on disk or tape, supporting industry-standard AES-256 and DataFort-compatible encryption mode (16 8Gb Fibre Channel ports; up to four blades; requires DCFM management)


    1 USB port per control processor for firmware download, support save, and configuration upload/download

    Mechanical Specifications


    Rear panel-to-door airflow; Brocade DCX-4S ships with 1U exhaust shelf

    Rack-mountable in a standard 19-inch EIA cabinet

    Brocade DCX-4S
    Width: 44 cm (17.22")
    Height: 35 cm (13.78", 8U) plus 4 cm exhaust shelf (4 cm (1.72"), 1U)
    Depth without door: 61 cm (24.09")
    Depth with door: 73 cm (28.82")

    System weight
    Brocade DCX-4S
    68.04 kg (150.00 lb) for 192-port configuration fully populated
    25.26 kg (56.80 lb) for chassis

Environmental Operating Conditions

  • Temperature
    Operating: 0° C to 40° C (32° F to 104° F)
    Non-operating: –25° C to 70° C (–13° F to 158° F)

    Operating: 20% to 85% RH non-condensing at 40° C (104° F)
    Non-operating and storage (non-condensing): 10% to 93% at 70° C (158° F)

    Up to 3000 meters (9842 feet)

    Operating: 20 g, 6 ms, half sine
    Non-operating: 33 g, 11 ms, half sine

    Operating: 0.5 g p-p, 5 to 500 to 5 Hz
    Non-operating: 2.0 g p-p, 5 to 500 to 5 Hz

    Heat dissipation

    Brocade DCX-4S
    Min: 16-port configuration of 363 W, 1239 BTU/hr
    Max: 192-port configuration of 753 W, 2570 BTU/hr

    CO2 emissions

    Brocade DCX-4S
    2.8 metric tonnes per year (with 192 ports at 0.42 kg/kWh)
    1.8 kg per Gbit/sec per year


  • Voltage
    Range: 85 to 264 VAC Auto-volt
    Nominal: 100 to 240 VAC

    85 to 132 VAC; 1000 W
    180 to 264 VAC: 2000 W

    In-rush current
    20 Amps maximum, peak

    47 to 63 Hz
The PowerConnect B-DCX 4S includes a highly robust 8Gbps network switching platform that combines performance, scalability, and efficiency with long-term investment protection.

Choice at the Core and at the Edge

The PowerConnect B-DCX 4S is built for both large and midsize networks and has four horizontal blade slots to provide up to 192 Fibre Channel ports. It features high-speed Inter-Chassis Link (ICL) ports to connect up to three backbones, providing scalability and flexibility at the network core.

High Performance, Scalability, and Efficiency

Delivering 8 Gbps throughput, the PowerConnect B-DCX 4S enables enterprises to:
  • Achieve server, storage, network, and data center consolidation
  • Broaden server virtualization with more–and more demanding–virtual machines on fewer physical servers
  • Reduce equipment, facility, and overhead costs
  • Scale efficiently and non-disruptively to meet storage growth and application demands

The PowerConnect B-DCX 4S is built for efficiency and uses less than one-half watt per GB/sec. In addition the PowerConnect B-DCX 4S helps to free up limited power and cooling resources in the data center for more servers and storage arrays.

Flexible, Multi-protocol Architecture

The PowerConnect B-DCX 4S supports 1/2/4/8/10Gbps Fibre Channel, FCIP, and IPFC. To consolidate server I/O for open systems using emerging Fibre Channel over Ethernet (FCoE) and Data Center Bridging (DCB)/Converged Enhanced Ethernet (CEE), the PowerConnect B-DCX 4S can provide high density, end-of-row connectivity. Alternatively, the PowerConnect B-8000 top-of-rack switch can be connected over Fibre Channel ISLs to DCX Backbones in the network core.

The PowerConnect B-DCX 4S includes a Virtual Fabrics feature that enables partitioning of a physical SAN into logical fabrics and isolation by application, business group, customer, or traffic type. Optional Fibre Channel Integrated Routing alleviates the need for special-purpose blades or routers to connect servers and storage in separate fabrics. And optional SAN extension over long-distance IP connections accelerates offsite replication, backup, and restore.

Intelligent Management and Monitoring

The PowerConnect B-DCX 4S utilizes a powerful Fabric Operating System (FOS), delivering advanced capabilities to include Bottleneck Detection, Top Talkers, and Adaptive Networking, a suite of tools that helps optimize fabric behavior and ensure ample bandwidth for critical apps. To maximize network performance and reduce administrative overhead, Brocade DCFM brought to you by Dell™ provides intuitive system configuration, comprehensive management, and a topology-centric view of the network fabric.

Dell Global Services can deliver what is needed to help ensure that your IT investment is optimized.

Supporting Your Unique Environment

The right support is not one-size-fits-all, so Dell ProSupport provides a flexible, reliable and easy support model – empowering you to customize services to meet your unique business needs. For example, organizations with an IT team can take advantage of Dell ProSupport for IT. You get the tech-to-tech support you need, and the ability to bypass phone-based trouble shooting when you already know the problem with Fast-Track Dispatch.

Dell ProSupport options give you the opportunity to directly align support to address critical challenges – like maximizing the uptime of your server and storage infrastructure. With the right options, the Dell ProSupport Mission Critical option is designed to help you reduce critical downtime by as much as 48%*. Dell is recognized as a leader in the industry for mission critical support – and is the 2005 and 2007 winner of the highly coveted SSPA Award for Mission Critical Support. Further maximize the availability and stability of your infrastructure through Dell ProSupport Proactive Maintenance with scheduled assessments, streamlined patch management and detailed reporting.

Additionally, Dell ProSupport Remote Advisory options can provide telephone access to technical expertise on applications and solutions such as Microsoft Exchange, Virtualization and more.

To learn more about Dell ProSupport visit

Strengthening Your IT Infrastructure

Dell Infrastructure Consulting can help integrate your new enterprise hardware into an existing or evolving IT infrastructure. We can provide guidance whether you’re adding single or multiple servers, a storage area network or virtualizing your environment.

We can also help you enhance the overall performance of your IT infrastructure and data center by consolidating software and hardware, reviewing data usage to optimize the environment, developing a business continuity plan and by helping you migrate to standards-based technologies.

Accelerating Deployment

Dell helps simplify implementation with deployment services that speed time to production of new hardware and IT solutions. During the initial system-build of your server, we can customize software and hardware to match your specific requirements. By helping you rapidly deploy new capabilities while minimizing disruptions, we can contribute to improved efficiencies and lower costs.

Empowering Your Team

Our education services provide training and certification courses to help you and your team better manage and use your new hardware so you can reap the full benefits of standards-based technologies.

Get the most from your new systems. Turn to Dell for the services you need to help Get IT Faster, Run IT Better and Grow IT Smarter.

For more information, please visit www.dell.com/services.