QSFP+ vs QSFP28: Making the Right Choice
Введение:
When it comes to high-speed data communication, КСФП (Четырехъядерный малый форм-фактор) transceiver modules have gained significant popularity. With their ability to provide fast, надежный, and high-density connectivity, these modules are widely used in data centers for applications like Ethernet, InfiniBand, and Fiber Channel. В этой статье, we will explore and compare two common variants of the QSFP module: QSFP+ and QSFP28.
я. КСФП+:
1. Введение:
– QSFP+ is the fourth-generation variant of the QSFP module, succeeding QSFP, КСФП28, and QSFP56.
– It was first introduced in 2010 and offered significant enhancements over its predecessor.
2. Технические характеристики:
– It supports data rates up to 40 Gbps and is compatible with existing QSFP 40G cables and connectors.
– Using four parallel channels, it can transmit and receive 10 Gbps on each lane, providing an aggregate bandwidth of 40 Гбит/с.
– QSFP+ supports various communication standards, включая Ethernet, InfiniBand, and Fiber Channel.
3. Преимущества:
– Низкая стоимость: QSFP+ modules are generally more affordable than their newer counterparts.
– Гибкость: It can be used with existing 40G infrastructure, making it a suitable choice for gradual upgrades.
– Availability: QSFP+ modules are widely available in the market.
4. Ограничения:
– Bandwidth limitation: With increasing demand for higher data rates, QSFP+ may not be sufficient for future-proof connectivity.
– Потребляемая мощность: QSFP+ consumes more power compared to its newer variants.
II. КСФП28:
1. Введение:
– QSFP28 is the next generation of QSFP modules, offering improved performance and higher data rates.
– Он был введен в 2016 as the successor to the QSFP+ module.
2. Технические характеристики:
– QSFP28 supports data rates up to 100 Гбит/с, delivering faster and more efficient connectivity.
– It uses four parallel lanes, with each lane capable of transmitting and receiving data at 25 Гбит/с, providing an aggregate bandwidth of 100 Гбит/с.
– QSFP28 is backward compatible with QSFP+ and can support 40G and 10G data rates with the use of appropriate adapters.
3. Преимущества:
– Более высокие скорости передачи данных: QSFP28 provides four times the bandwidth of QSFP+.
– Power efficiency: QSFP28 consumes less power compared to QSFP+.
– Future-proof: With its ability to support 100 Скорость передачи данных в Гбит/с, QSFP28 is better suited for evolving network requirements.
4. Ограничения:
– Более высокая стоимость: QSFP28 modules are generally more expensive compared to QSFP+.
– Availability: QSFP28 modules may be less common and harder to find in the market due to their relatively recent introduction.
Заключение:
В заключение, both QSFP+ and QSFP28 offer reliable and high-speed connectivity options for data centers and various other applications. Choosing between the two depends on factors like budget, current infrastructure, and future network requirements. While QSFP+ offers lower cost and compatibility with existing 40G infrastructure, QSFP28 provides higher data rates and better power efficiency, making it a more future-proof option. It is essential to assess the organization’s needs and consult with professionals to make an informed choice between QSFP+ and QSFP28.
