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针对全国性机构数据集中实时数据复制与灾害备援需求,IBM 采用 NAS,LTO 技术及 NSI Software Double-Take 数据同步方案,为全国性机构地市级节点以及省级中心节点提供基于 NAS 存储平台的数据同步解决方案,以最经济的方式达到备援的目的,并保证系统的高可用性。该方案对于全国性机构地市级节点的数据通过现有的网络连接,占用最少的网络资源,在第一时间将数据文件以增量的方式传送至省级中心节点。同时也可实现省级中心节点向地市级节点的数据发送。并且在每个地市级节点还可以实现两台 NAS 存储设备之间的数据实时同步以及系统的灾难备援。并且在磁盘介质备份的基础上,可进一步实现磁盘到磁带的数据备份,以充分满足数据的安全与可用性。全国性机构数据集中与备份方案拓扑如图所示。
In response to the need for real-time data replication and disaster recovery in nationwide data centers, IBM adopts NAS, LTO technology and NSI Software Double-Take data synchronization solution to provide nationwide agency-level nodes and provincial-level central nodes with NAS-based storage platform Data synchronization solution to achieve the purpose of redundancy in the most economical way and to ensure the high availability of the system. The scheme transmits the data file to the provincial center node in an incremental manner for the first time through the existing network connection and the minimum network resources for the data of the national agencies’ municipal nodes. At the same time can also be achieved at the provincial center node to the municipal node data transmission. At each prefecture-level node, real-time synchronization of data between two NAS storage devices and disaster recovery of the system can also be implemented. And in the disk media backup, based on further disk-to-tape data backup to fully meet the data security and availability. The national organization data center and backup program topology as shown.