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51. 发明申请

US20050193240A1 Dynamic reconfiguration of memory in a multi-cluster storage control unit 失效
标题翻译：多集群存储控制单元中的内存动态重新配置
公开(公告)号：US20050193240A1
公开(公告)日：2005-09-01
申请号：US10781467
申请日：2004-02-17
申请人： Kevin Ash , Richard Grossman , Joseph Ohrazda , Pablo Rodriguez , Tim Vande Zande
发明人： Kevin Ash , Richard Grossman , Joseph Ohrazda , Pablo Rodriguez , Tim Vande Zande
IPC分类号： G06F11/00
CPC分类号： G06F11/2089 , G06F3/0607 , G06F3/0632 , G06F3/0656 , G06F3/0689 , G06F12/0866
摘要： A data storage control unit is coupled to one or more host devices and to one or more physical storage units, the storage control unit configured as a plurality of clusters. Each cluster includes cache memory and often non-volatile storage (NVS). The storage control unit receives and processes write requests from the host devices and directs that data updates be temporarily stored in the cache in one cluster and copied to the NVS of the other cluster. The data updates are subsequently destaged to the logical ranks associated with each cluster. During an initial microcode load (IML) of the storage controller, space in the cache and NVS of each cluster is allocated to buffers with the remaining cache and NVS space being allocated to customer data. After an IML has been completed, the size of the buffers become fixed and no further buffer allocation may occur. Method, apparatus and program product are provided by which a data storage controller dynamically reconfigures NVS and cache memory in multiple clusters, particularly when it is desired to change the size of the NVS and cache of either or both clusters.
摘要翻译：数据存储控制单元耦合到一个或多个主机设备和一个或多个物理存储单元，该存储控制单元配置为多个集群。每个集群包括高速缓存和通常的非易失性存储（NVS）。存储控制单元接收并处理来自主机设备的写入请求，并指示数据更新临时存储在一个集群中的高速缓存中，并复制到另一个集群的NVS。数据更新随后转移到与每个集群相关联的逻辑排名。在存储控制器的初始微代码加载（IML）期间，每个集群的高速缓存和NVS中的空间被分配给缓冲区，其余的高速缓存和NVS空间被分配给客户数据。在完成IML之后，缓冲区的大小变得固定，并且不会发生进一步的缓冲区分配。提供了方法，装置和程序产品，数据存储控制器通过该产品动态地重新配置NVS和多个集群中的高速缓冲存储器，特别是当希望改变NVS和任一个或两个集群的高速缓存的大小时。

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