摘要
CompactPCI(以下简称CPCI)高可用冗余热插拔系统平台 ,采用 1+1双主系统槽冗余热切换结构 ,支持主系统槽冗余备份、故障板隔离、热切换以及动态配置 ,达到 99.999%的高可用性 .高可用系统总线仲裁器的设计是保障该系统热切换的关键逻辑 ,其性能直接影响整个系统的可靠性和传输带宽等指标 ,本文提出了一种CPCI总线仲裁器 ,并在EPLD(erasableprogrammablelogicdevice可编程逻辑器件 )中实现该逻辑 .实际测量的结果表明该方案是一种公平、高效的总线仲裁器 ,完全满足高可用CPCI系统平台的要求 .
The CompactPCI high availability redundant hot-swap platform with dual primary system boards to hot swap with each other supports primary system board back-up, automatically isolates faulty boards, disconnects them and connects their replacements. The system can provide availability levels of 99.999%. A kind of bus arbitrator system of this HA platform was advanced which is one of the most important core logical modules and implemented it in the EPLD. Testing results show that the logical module is a highly-efficient and fair bus arbitrator that can totally satisfy the requirements of the high availability system platform totally.
