IBM 21H9799 Long Wave Fibre Channel GBIC Transceiver Module

Product Description

The IBM 21H9799 is a Long Wave (LW) GBIC (Gigabit Interface Converter) transceiver module specifically designed for Fibre Channel (FC) networking. GBIC modules are an older form factor for transceivers, typically used in earlier generations of Fibre Channel switches and host bus adapters (HBAs). This particular module employs long wave optics, which are optimized for transmitting data signals over significantly longer distances compared to short wave modules, making it suitable for connecting devices across a campus or between buildings. This transceiver module converts electrical signals from the host device into optical signals for transmission over fiber optic cable, and vice versa. The 'Long Wave' designation indicates that it operates at a specific wavelength optimized for extended reach, often utilizing single-mode fiber. The typical connector for GBIC modules is an SC duplex connector, providing a secure and reliable physical link. As a hot-pluggable component, the 21H9799 can be installed or removed from a compatible GBIC slot without the need to power down the host system or network device. This feature is crucial for maintaining network uptime and facilitating maintenance or upgrades. It serves as a vital link in Fibre Channel Storage Area Networks (SANs), enabling high-speed, reliable data transfer between servers and storage arrays over extended distances.