【摘要】 网格中的数据传输工具主要有GridFTP和GASS ,但是GridFTP并非针对面向服务的网格体系结构设计 ,其部署、配置和管理困难 ,缺乏动态性和可扩展性 ;GT3中的另一个数据传输工具GASS由于传输过程延迟高 ,计算开销大而无法真正应用 因此基于WebServices与Servlet技术开发了一个数据传输协议 ,它不仅与网格面向服务的体系结构兼容 ,还减少了服务间由于XML消息传递带来的传输性能损失 ;授权之后的网格用户可以在Vega服务网格环境中动态地部署、维护、使用与卸载这种协议 测试表明 ,VegaHotfile在以服务方式实现文件控制与传输的情况下具有较高性能更多还原

【Abstract】 GridFTP is a kind of grid file transfer software in Globus with client/server structure, which isn’t compatible with grid SOA.Though GASS in GT3 can be deployed to server by client, because of poor performance, GASS wasn’t used pervasively.For the above reasons, a new grid file management protocol called Vega Hotfile is developed, which is compatible with grid SOA.Based on Web services and Java servlet, Vega Hotfile can be dynamically deployed to Vega grid operation system and dynamically undeployed from it; Vega Hotfile has high availability and high manageability.With the same operations and different virtual file name, Vega Hotfile can transfer file by HTTP or HTTPS protocol.Performance evaluation shows that Vega Hotfile has far better performance than GASS with the same security level, and has better performance than GridFTP when file is smaller than 64MB.更多还原