Overview
The SFP28-32G31-LW is a high-performance, cost-effective SFP28 transceiver module designed for 32G Fibre Channel (32GFC) applications. It provides a robust and reliable solution for high-speed Storage Area Networks (SANs) and data center interconnects, supporting data transmission up to 10km over single-mode fiber (SMF). This module features a superior 1310nm DFB laser transmitter and PIN receiver, ensuring consistent performance. A key advantage of this transceiver is its multi-rate capability, offering backward compatibility with 16G and 8G Fibre Channel speeds, which provides a flexible and seamless upgrade path for existing network infrastructure.
Key Features
- Multi-Rate Support: Provides flexible connectivity with auto-negotiation for 32G/16G/8G Fibre Channel data rates.
- Long Wavelength (LW): Operates at a nominal wavelength of 1310nm using a high-reliability DFB laser.
- 10km Reach: Capable of transmitting high-speed data up to 10 kilometers over standard single-mode fiber (SMF).
- SFP28 Form Factor: Hot-pluggable SFP28 MSA-compliant footprint allows for easy installation and removal without shutting down the system.
- Digital Diagnostics Monitoring (DDM): Supports real-time monitoring of critical parameters like optical power, temperature, and voltage.
- Low Power Consumption: Engineered for power efficiency, typically consuming less than 1.2W, reducing operational costs.
- Robust Construction: Features an all-metal housing for superior EMI performance and durability.
- Standard LC Connector: Equipped with a duplex LC optical interface, the industry standard for high-speed networking.
Applications
The SFP28-32G31-LW transceiver is the ideal choice for demanding, high-bandwidth environments. Its performance and multi-rate flexibility make it perfectly suited for:
- High-speed Storage Area Networks (SAN)
- 32G/16G/8G Fibre Channel switches and directors
- Data Center interconnects and enterprise networking
- Server to SAN and switch to switch connections
- High-performance computing (HPC) clusters
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | SFP28-32G31-LW Compatible |
| Form Factor | SFP28 |
| Data Rate | 32G / 16G / 8G Fibre Channel |
| Wavelength | 1310nm |
| Maximum Cable Distance | 10km |
| Connector | LC Duplex |
| Fiber Type | Single-Mode Fiber (SMF) |
| Transmitter Type | DFB Laser |
| Receiver Type | PIN |
| DDM/DOM Support | Yes |
| Commercial Temperature Range | 0°C to 70°C (32 to 158°F) |
| Power Consumption | < 1.2W |
| Protocols | MSA Compliant, SFF-8472, SFF-8431 |
Advantages
Choosing the SFP28-32G31-LW module ensures a reliable and future-proof investment for your storage network. Each transceiver undergoes rigorous testing in real-world environments to guarantee 100% compatibility and flawless performance with major switch and server brands. The built-in DDM functionality offers invaluable insight for network administrators, enabling proactive maintenance and rapid troubleshooting to maximize uptime. The most significant advantage is its multi-rate support, which protects your investment by allowing you to deploy 32G-capable hardware today while maintaining full connectivity with older 16G or 8G SAN infrastructure, ensuring a smooth and phased migration to higher speeds without requiring a complete overhaul.
Product & Technical FAQs
1. What is a 32G SFP28 LW transceiver?
A 32G SFP28 LW (Long Wavelength) transceiver is a compact, hot-pluggable optical module used for 32G Fibre Channel data transmission. It uses a 1310nm laser to send data up to 10km over single-mode fiber.
2. What does ‘multi-rate’ mean for this SFP28 module?
Multi-rate means this module can automatically detect and operate at different Fibre Channel speeds. The SFP28-32G31-LW supports 32GFC, 16GFC, and 8GFC, making it backward compatible with older SAN equipment.
3. Is this transceiver compatible with Brocade or Cisco Fibre Channel switches?
Yes, this module is built to MSA (Multi-Source Agreement) standards and is programmed to be fully compatible with major brands like Brocade, Cisco (MDS Series), Dell, and others that do not restrict their ports to proprietary transceivers.
4. Can I use a 32G FC SFP28 module in a 25G Ethernet SFP28 port?
While they share the same physical SFP28 form factor, Fibre Channel (FC) and Ethernet are different protocols. A 32GFC module will typically not work in a port configured for 25G Ethernet, and vice versa. You must ensure the host port supports the required Fibre Channel speed and protocol.
5. What is the difference between SFP28 LW and SW?
The main difference is the application. LW (Long Wavelength), like this module, uses a 1310nm laser for long distances (up to 10km) over Single-Mode Fiber (SMF). SW (Short Wavelength) uses an 850nm laser for short distances (up to 100m) over Multi-Mode Fiber (MMF).
6. What does DDM functionality provide?
DDM (Digital Diagnostics Monitoring) provides real-time access to the module’s operating parameters. This includes monitoring the transmit (Tx) and receive (Rx) optical power, module temperature, and supply voltage, which is crucial for network health monitoring.
7. What type of fiber optic cable is required for this module?
To achieve the maximum distance of 10km, you must use a standard Single-Mode Fiber (SMF) patch cable (e.g., OS1 or OS2) with LC Duplex connectors.
8. Is this SFP28 module hot-swappable?
Yes, the SFP28-32G31-LW is fully hot-swappable. This allows you to install or remove the module from a switch or server port without needing to power down the device, preventing network downtime during maintenance or upgrades.
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