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    • 5. 发明授权
    • Nonvolatile storage thresholding
    • 非易失性存储阈值
    • US08140811B2
    • 2012-03-20
    • US12489107
    • 2009-06-22
    • Kevin J. AshLokesh M. GuptaMatthew J. KalosAlfred E. SanchezKenneth W. Todd
    • Kevin J. AshLokesh M. GuptaMatthew J. KalosAlfred E. SanchezKenneth W. Todd
    • G06F12/08G06F13/00
    • G06F12/0804G06F12/0866G06F2212/214
    • Embodiments for facilitating data transfer between a nonvolatile storage (NVS) write cache and a pool of target storage devices are provided. Each target storage device in the pool of target storage devices is determined as one of a hard disk drive (HDD) and a solid-state drive (SSD) device, and classified into one of a SSD rank group and a HDD rank group. If no data is received in the NVS write cache for a predetermined time to be written to a target storage device classified in the SSD rank group, a threshold of available space in the NVS write cache is set to allocate at least a majority of the available space to the HDD rank group. Upon receipt of a write request for the SSD rank group, the threshold of the available space is reduced to allocate a greater portion of the available space to the SSD rank group.
    • 提供了用于促进非易失性存储(NVS)写入高速缓存和目标存储设备池之间的数据传输的实施例。 目标存储设备池中的每个目标存储设备被确定为硬盘驱动器(HDD)和固态驱动器(SSD)设备之一,并且被分类为SSD等级组和HDD等级组之一。 如果在NVS写入高速缓存中没有数据被接收到预定时间被写入到SSD等级组中的目标存储设备上,则NVS写入高速缓存中的可用空间阈值被设置为分配至少大部分可用的 空间到HDD排名组。 在接收到SSD等级组的写入请求时,可用空间的阈值被减小以将更大部分的可用空间分配给SSD等级组。
    • 9. 发明授权
    • Synchronization of logical copy relationships
    • 逻辑复制关系的同步
    • US08775753B2
    • 2014-07-08
    • US12984489
    • 2011-01-04
    • Lisa J. GundyAlfred E. SanchezDavid M. ShackelfordWarren K. Stanley
    • Lisa J. GundyAlfred E. SanchezDavid M. ShackelfordWarren K. Stanley
    • G06F13/00
    • G06F11/2064G06F11/2074G06F11/2082
    • An approach to synchronization of logical copy relationships on a local site with those on a remote site that is a mirror. A withdraw command is received on the local site for logical copy relationships between local source tracks and local target tracks. The withdraw command is executed and sent to a remote site buffer, from which it will be transferred to the remote site. Change indicators are set for the at least one local track in the affected logical copy relationships. If the withdraw command is lost from the remote site buffer, the remote site buffer will be rebuilt using the change indicators. By setting change indicators for local tracks in a withdrawn logical copy relationship (even if the data in local tracks hasn't changed), the remote counterparts to these tracks on the remote site will be rewritten, resulting in withdrawal of the logical copy relationship there even if the withdrawal command was never sent to the remote site.
    • 本地站点上的逻辑复制关系与远程站点上的镜像同步的方法。 在本地站点上收到撤销命令,用于本地源轨道和本地目标轨道之间的逻辑复制关系。 执行撤销命令并将其发送到远程站点缓冲区,并将其从远程站点缓存传输到远程站点。 对受影响的逻辑副本关系中的至少一个本地磁道设置更改指示符。 如果提取命令从远程站点缓冲区丢失,则将使用更改指示器重建远程站点缓冲区。 通过在取消的逻辑复制关系中设置本地磁道的更改指示(即使本地磁道中的数据未更改),远程站点上的这些磁道的远程对应方将被重写,从而导致逻辑副本关系撤回 即使撤回命令从未发送到远程站点。