active redundancy

How to choose the backup resources is a challenging issue for grid middleware to provide resource backup service.

如何为应用选择备份资源是网格资源备份服务要解决的首要问题 。

During backup and restore of file system,it needs to merge current backup resource tree and previous one,namely operations between catalog tree and resource tree.

文件系统备份和恢复过程中,需根据当前备份资源树和历史备份资源树进行合并等操作,这种操作在物理上表现为对目录树和资源树的处理。