标题: Comparing 10GBase-T to SFP+ with DAC 10GBase-T与SFP+ with DAC的比较 [打印本页] 作者: wzt10gtek 时间: 2012-11-21 10:24 标题: Comparing 10GBase-T to SFP+ with DAC 10GBase-T与SFP+ with DAC的比较 10GBase-T advantages（10GBase-T的优势）:
- Longer distance – 100 meters vs. 8.5
- Familiar RJ45 connectors and Cat 5/6/7 cables
- Use of patch panels and structured wiring
- Backward compatibility to 1 gigabit Ethernet or 100 megabit Ethernet
SFP+ with DAC advantages（SFP+ with DAC的优势）:
- Significantly lower overall cost, when you include switch, NIC and cable
- Lower latency – 300 ns per hop vs. 2.6 us per hop
- Lower power and lower heat
- Freely intermix fiber and DAC to meet distance requirements
For data centers, the advantages of SFP+ with DAC are a very good match for today’s requirements and emerging trends. That’s why SFP+ with DAC is being adopted rapidly as best practice for new data centers.
For wiring closets, 10GBase-T will be the obvious choice once the demand for bandwidth becomes more acute and once the price and power for 10GBase-T technology comes down.