Moreover, to lower maintenance efforts, the technique of network harddisk recovery card is adopted in implementing data protection, copy and recovery based on networks.
采取网络硬盘还原卡，实现了硬盘数据保护及网络对拷，达到了减少维护工作量的目的。
A copy of all maintenance contracts are kept on file in the Engineering office.
这份档案包括所有关于新工程的文件。
Aiming at load balancing, data movement service mainly contains copy management and catalog maintenance. Designs for service, achieving and performance are analyzed detailedly in this paper.
提出了一种在网格环境下以负载均衡为目标的数据移动服务，并对服务的设计与实现、性能等进行了较为详细的分析。
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