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公开(公告)号:US07921328B1
公开(公告)日:2011-04-05
申请号:US12106166
申请日:2008-04-18
申请人: Shvetima Gulati , Hitesh Sharma , Atul R. Pandit
发明人: Shvetima Gulati , Hitesh Sharma , Atul R. Pandit
IPC分类号: G06F11/00
CPC分类号: G06F11/2074
摘要: A mirror destination storage server receives mirror update data streams from several mirror source storage servers. Data received from each mirror is cached and periodic checkpoints are queued, but the data is not committed to long-term storage at the mirror destination storage server immediately. Instead, the data remains in cache memory until a trigger event causes the cache to be flushed to a mass storage device. The trigger event is asynchronous with respect to packets of at least one of the data streams. In one embodiment, the trigger event is asynchronous with respect to packets of all of the data streams.
摘要翻译: 镜像目的地存储服务器从多个镜像源存储服务器接收镜像更新数据流。 从每个镜像收到的数据被缓存,并且定期检查点排队,但数据不会立即在镜像目标存储服务器上提交到长期存储。 相反,数据保留在高速缓存中,直到触发事件导致缓存被刷新到大容量存储设备。 触发事件相对于至少一个数据流的数据包是异步的。 在一个实施例中,相对于所有数据流的分组,触发事件是异步的。
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公开(公告)号:US08595457B1
公开(公告)日:2013-11-26
申请号:US12261315
申请日:2008-10-30
申请人: Kapil Kumar , Hitesh Sharma , David Grunwald
发明人: Kapil Kumar , Hitesh Sharma , David Grunwald
CPC分类号: G06F13/28 , G06F11/1662
摘要: Method and system for replicating a storage volume is provided. Information is adaptively replicated in a swap mode or a copy mode. When information is copied from a storage volume to a memory buffer, an application determines if another information transfer from the same source volume is pending. If a transfer from the same source is pending, then information is copied from the memory buffer to a stolen buffer in a copy mode. If a transfer from the same source is not pending, then instead of copying the information, the application enables a swap mode. During the swap mode, an operating system for a storage system swaps a pointer from the stolen buffer to information stored in the memory buffer. The memory buffer itself is invalidated so that no other module can access the memory buffer. Because the pointers are swapped, the application accesses information directly from the memory buffer.
摘要翻译: 提供了复制存储卷的方法和系统。 信息在交换模式或复制模式下自适应地复制。 当信息从存储卷复制到存储缓冲区时,应用程序确定来自同一源卷的另一个信息传输是否处于待处理状态。 如果来自同一个源的传输是挂起的,那么在复制模式下将信息从内存缓冲区复制到被盗的缓冲区。 如果来自同一来源的传输未挂起,则不需要复制信息,应用程序将启用交换模式。 在交换模式期间,用于存储系统的操作系统将指示器从被盗的缓冲器交换到存储在存储器缓冲器中的信息。 内存缓冲区本身无效,因此没有其他模块可以访问内存缓冲区。 因为指针被交换,应用程序直接从内存缓冲区访问信息。
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