业务连续性容灾解决方案
双活数据中心解决方案技术白皮书( HyperMetro) 目 录
文档版本 01 (2015-06-29) 华为专有和保密信息
版权所有 ? 华为技术有限公司
iii
3.3.2 C/S 应用双活 ....................................................................................................................................................33
3.3.3 数据库双活 ......................................................................................................................................................35
3.3.3.1 Oracle RAC 双活 ...........................................................................................................................................37
3.3.3.2 DB2 双活 .......................................................................................................................................................38
3.3.3.3 SQL Server双活 ............................................................................................................................................39
3.4 网络层双活 .........................................................................................................................................................40
3.4.1 网络架构 .........................................................................................................................................................40
3.4.2 跨数据中心网络 ..............................................................................................................................................40
3.4.3 业务访问网络架构 ..........................................................................................................................................42
3.4.3.1 B/S 应用网络架构 .........................................................................................................................................42
3.4.3.2 C/S应用网络架构 .........................................................................................................................................43
3.4.4 二层互联 .........................................................................................................................................................47
3.4.5 负载均衡技术 ..................................................................................................................................................49
3.4.5.1 站点间负载均衡 ...........................................................................................................................................49
3.4.5.2 站点内负载均衡 ...........................................................................................................................................52
3.5 传输层技术 .........................................................................................................................................................54
3.6 安全层技术 .........................................................................................................................................................54
4 可视化容灾管理 ....................................................................................................................... 60
4.1 总体部署 ............................................................................................................................................................60
4.1.1 部署方式 .........................................................................................................................................................60
4.1.2 系统运行环境 ..................................................................................................................................................61
4.2 应用支持矩阵 .....................................................................................................................................................63
4.3 适用容灾场景 .....................................................................................................................................................63
4.3.1 SAN 双活场景 ..................................................................................................................................................63
4.3.1.1 技术特点 .......................................................................................................................................................63
4.3.1.2 物理拓扑 .......................................................................................................................................................64
4.3.1.3 逻辑拓扑 .......................................................................................................................................................64
4.3.2 SAN 双活+快照场景 ........................................................................................................................................65
4.3.2.1 技术特点 .......................................................................................................................................................65
4.3.2.2 物理拓扑 .......................................................................................................................................................65
4.3.2.3 逻辑拓扑 .......................................................................................................................................................65
4.3.3 SAN 双活+异步复制场景 .................................................................................................................................66
4.3.3.1 技术特点 .......................................................................................................................................................66
4.3.3.2 物理拓扑 .......................................................................................................................................................66
4.3.3.3 逻辑拓扑 .......................................................................................................................................................67
5 故障场景 .................................................................................................................................. 68
5.1 GSLB 故障 ..........................................................................................................................................................68
5.2 SLB 故障 .............................................................................................................................................................69
5.3 Web服务器故障 ..................................................................................................................................................71