发明授权
US08140788B2 Apparatus, system, and method for selecting an input/output tape volume cache 失效
用于选择输入/输出磁带卷缓存的装置,系统和方法

Apparatus, system, and method for selecting an input/output tape volume cache
摘要:
An apparatus, system, and method are disclosed for selecting an input/output tape volume cache (TVC). A history module maintains access history instances for a plurality of clusters. A request module receives an access request for a logical volume. An adjustment module weights the access history instances in favor of recent access history instances. A calculation module calculates an affinity of the logical volume for each cluster of the plurality of clusters. The calculation module may calculate the affinity of the logical volume for each cluster of the plurality of clusters using read/write/scratch granularity and an algorithm. Further, the calculation module may filter out clusters. A selection module selects a cluster TVC with a highest affinity as the TVC for the logical volume.
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