Dell PowerConnect B-DCX 4S

intel® xeon™
We're here to help. Contact a Dell expert ›

PowerConnect B-DCX 4S Network Switch

Organisations seeking a highly robust 8Gbps platform that combines performance, scalability and efficiency with long-term investment protection.

Sorry, this item is not available anymore for purchase online. Please see our recommended replacement product.



  • 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 8GB 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 ultra-high-speed Inter-Chassis Link (ICL) ports to connect up to three backbones, providing extensive scalability and flexibility at the network core. At the network, edge organizations can utilize Brocade 8 Gbps switches, Brocade 48000 Directors, or—for complete backbone-class capabilities— additional Brocade DCX 4S modular switches.

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 1/2/4/8/10GB 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.

Native B- and M-Series (M = Number of supplies needed for fully loaded system and N = 1 to M supply redundancy) connectivity enable organizations to leverage current PowerConnect B-Series investments without risk, disruption, or management complexity. 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 DellTM provides intuitive system configuration, comprehensive management, and a topology-centric view of the network fabric.

Supporting Your Unique Environment

The right support is not one size fits all, it’s what fits your environment. The Dell™ ProSupport™ portfolio of support services provides a flexible, reliable and easy support model that empowers you to customize services to meet your unique business needs. Choose support based on how you use technology and where you want to allocate resources.

If you don’t have an IT staff, Dell ProSupport for end users is the way to go. You’ll receive:

  • 24x7x365 direct break-fix hardware and software support for your employees
  • "How-to" support on popular software applications such as Norton™ Anti-Virus, Microsoft® Office, Microsoft Small Business Server, Intuit® QuickBooks®, Adobe® Photoshop® and Adobe Acrobat®
  • Remote setup assistance for simple networks (wired and wireless)
  • Award-winning support from Global Command Centers for dispatch monitoring and end-to-end case management for critical situations or natural disasters

If you have an IT team, Dell ProSupport for IT is right for you. You’ll receive:

  • 24x7x365 direct access to Dell expert centers via email, chat and phone support
  • Mission Critical Response options, including ability to self-designate Severity Level 1
  • Hardware and software diagnostics and troubleshooting, including direct Dell OEM (original equipment manufacturer) support and third-party collaborative support
  • Skip the script and save time with tech-to-tech support
  • Fast track dispatch for Dell-certified technicians, enabling you to self-dispatch parts and labor
  • Award-winning support from Global Command Centers for dispatch monitoring and end-to-end case management for critical situations or natural disasters

Further maximize the availability and stability of your infrastructure through Dell ProSupport options such as asset and data protection, speed of response, specialized on-site services, proactive maintenance and remote advisory services. Streamline patch management and get detailed reporting. Get advice via telephone access to technical expertise on applications and solutions such as Microsoft Exchange, virtualization and more. And for more complex IT environments, choose the enterprise-wide contract option, which provides a designated Service Delivery manager, performance benchmarking, proactive planning and custom reporting.

To learn more about Dell ProSupport visit www.dell.com/prosupport

Simplify Your IT Infrastructure

Dell ProConsult global infrastructure consulting services 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.

We utilize skilled solution architects, innovative tools, automated analysis and our own intellectual property to give customers rapid insight into the root causes of unnecessary complexity. We seek better answers than traditional service models, based on our belief that solving problems should not need armies of people. Our strategy is to help customers quickly identify high-impact, short-duration projects that deliver return on investment (ROI) and free up resources to obtain competitive advantage. The result is practical, action-oriented plans with specific, predictable, measurable outcomes. From Data Center Optimization to Server Virtualization to Systems Management, our consulting services help you build a more efficient enterprise.

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.

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

 You can only compare up to 7 products. To compare this item, deselect one of the other 7 products.