Customers Partners Investors Careers
Advanced Search
Tape Storage
Disk Storage
Storage Networking
Switches and Directors
Brocade SilkWorm 3250 entry fabric switch
Brocade SilkWorm 3850 enterprise fabric switch
Brocade SilkWorm 3900 enterprise fabric switch
Brocade SilkWorm 7420 multiprotocol router
Brocade SilkWorm 24000 director
Brocade SilkWorm 4100 Fibre Channel switch
McDATA Sphereon 4500 fabric switch
McDATA Sphereon 3232 fabric switch
McDATA Intrepid 6064 director
McDATA Intrepid 6140 director
Cisco MDS
Management Software
Home : Products : Storage Networking : Fabric Switches and Directors : Brocade SilkWorm 3900 enterprise fabric switch
Printable version
Brocade SilkWorm 3900 enterprise fabric switch
The Brocade® SilkWorm® 3900 Fibre Channel switch is a 32 port auto-sensing Fibre Channel core switch that combines entry-to-enterprise features and functions in a modular configuration. It combines one gigabit per second and two gigabit per second Fibre Channel throughput with advanced fabric services.
More Information
Images | Applications | Benefits | Features | Pricing | Specifications
Spec Summary
Ports per chassis:32 universal ports (E,F and FL)
Latency:<2.1 msec with no contention, cut-through routing
Port speed:Auto-sensing of 1 Gb/sec and 2 Gb/sec port speeds
Related Documents
Product Collateral
SilkWorm 3900 enterprise fabric switch collateral
Tuning SANs For High Availability - application note
Ask an expert
Pre-Sales Technical Questions

Product Support

How to Buy
Contact us online
Or call
For tape media purchases:

Case studies
Software Spectrum
Related offerings
Implementation Services
Product images Top

Click on an image below to enlarge it.

Brocade SilkWorm 3900 fabric switch


Backup and restore
Brocade SilkWorm switches are at the center of storage area networks (SANs) used to enable backup and restore to be shared across several applications, reducing costs and simplifying management.

Disaster recovery
Brocade SilkWorm switches play a critical role in complete disaster recovery systems, including SANs for clustering/fail-over, remote data vaulting and backup and restore functions.

Storage consolidation
By consolidating storage with a SAN using Brocade SilkWorm switches, you can better manage and protect all of your business critical information.

Disk mirroring
Disk SANs employing Brocade SilkWorm switches can be implemented to improve the manageability of local and remote mirroring systems, keeping online data better protected and more available.


High performance
The SilkWorm 3900 switch supports a SAN fabric capable of delivering overall system availability greater than 99.999 percent. It provides up to 128 gigabits per second of aggregated throughput, with 32 ports capable of two gigabit per second full-duplex performance. For even greater performance, organizations can use Brocade ISL Trunking to achieve eight gigabit per second throughput.

Designed for flexibility, the SilkWorm 3900 switch provides a complete solution for a departmental SAN fabric (as a small core) or for an edge switch extending the reach of an enterprise core-to-edge SAN built around the Brocade SilkWorm 12000 core fabric switch.

Investment protection
The SilkWorm 3900 switch offers full backward and forward compatibility with other Brocade SilkWorm switches to provide a seamless migration path to two gigabit per second connectivity and intelligent fabric services.

Simplified management
The SilkWorm 3900 switch offers Intelligent Fabric Services that centralize switch management and minimize cost of administration while simplifying allocation of storage.


Brocade Advanced Fabric Services
Enables new capabilities such as hardware-enforced World Wide Name (WWN) zoning for improved security and manageability.

Brocade Fabric Shortest Path First (FSPF)
FSPF enables the fabric to automatically isolate problems and reroute traffic around failed links onto alternate paths - ensuring availability for mission-critical enterprise applications.

Brocade Inter-Switch Link (ISL) Trunking
Create an eight-gigabit per second data path between switches for higher performance.

Brocade Fabric Access™ Application Programming Interface (API)
The API provides application developers with programmatic control of the fabric for discovery, zone, performance, and switch control functions.


Pricing varies depending on configuration and selected options. Product pricing does not include associated implementation service costs. Contact the "How to buy" help desk at 1-800-275-4785 (01-303-673-2800) for more information.

Request More Information
Port speed:Auto-sensing of 1 Gb/sec and 2 Gb/sec port speeds
ISL trunking:Up to four 2.125 Gbit/sec ports per trunk; up to 8.5 Gbit/sec per ISL trunk
Aggregate bandwidth:128 Gb/sec end-to-end
Latency:<2.1 msec with no contention, cut-through routing
Maximum frame size:2112-byte payload
Ports per chassis:32 universal ports (E,F and FL)
Chassis power:Redundant power supply
Interoperability:SilkWorm 2000, 3000 and 12000 switches
Classes of service:Class 2, Class 3, Class F (inter-switch frames)
Port types:FL-Port, F_Port, and E_Port; self-discovery based on switch type (U_Port); optional port type control
Data traffic types:Fabric switches support unicast, multicast (256 groups), and broadcast
Media types:Small Form-factor Pluggable (SFP)
Laser:Short-Wave Laser (SWL) up to 1,640 ft (500 m); Long-Wave Laser (LWL) up to 6.2 mi (10 km); distance depends on fiber optic cable and port speed
Fabric services:Simple Name Server, Registered State Change Notification (RSCN), Alias Server (multicast), and Brocade Zoning, Advanced Zoning, Extended Fabrics, Fabirc Watch, ISL Trunking, and Remote Switch (some services are optional)
Supported software:Telnet, SNMP, WEB TOOLS, Fabric Watch, and Fabric Manager (optional)
Management access:10/100 Ethernet (RJ-45), serial port
Diagnostics:POST and embedded online/offline diagnostics
Enclosure:Back-to-front airflow, power from rear 1.5 u, 19 in, EIA compliant
Weight:Single power supply weight: 31.60 lb (14.33 kg)
Double power supply weight: 35.80 lb (16.24 kg)
Mounting options:Rack-mountable in standard rack; Telco-style mid-mounting
Temperature:Operating: +50° F to +104° F (+10° C to +40° C)
Nonoperating: -13° F to +158°
Relative humidity:Operating: 20%–85% noncondensing at +104° F (+40° C)
Altitude:Operating: up to 9,800 ft (3,000 m)
Non operating: operating: up to 40,000 ft (12 k)
Vibration:Operating: 0.5 Gs, 5-500 Hz
Nonoperating: 2.0 Gs, 5-500 Hz
Shock:Operating: 80 G, 2.4 ms half-sine wave
Nonoperating: 20 G, 11 ms half-sine wave
Supported power range:Nominal: 100 to 240 VAC auto-ranging; 5.0 A
Frequency:47 - 63 Hz
Regulatory Compliance
Fibre Channel standards and revisions:FC-FG Rev 3.5, FC-FLA Rev 2.7, FC-PLDA Rev 2.1, FCVI Rev 1.6, FC-PH-2 Rev 7.4, FC-GS-3 Rev 7.01, FC-PH-3 Rev 9.4, FC-SW-2 Rev 5.4, IPFC RFC 2625, FC-AL-2 Rev 7.0, and FC-PH Rev 4.3


StorageTek equipment is manufactured from new parts, or new and used parts. In some cases, StorageTek equipment may not be new and may have been previously installed. Regardless, StorageTek's standard warranty terms apply, unless the equipment is specifically identified by StorageTek as "used" or "refurbished".

StorageTek and the StorageTek logo are registered trademarks of Storage Technology Corporation. Other products or company names mentioned may be trademarks of Storage Technology Corporation or other vendors/manufacturers.