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Disk drive choosing command from command queue based on a window defined by a probability of a seek miss
Disk drive choosing command from command queue based on a window defined by a probability of a seek miss
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机译：磁盘驱动器根据由查找未命中概率定义的窗口从命令队列中选择命令
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摘要
A disk drive is disclosed wherein a plurality of access commands received from a host are stored in a command queue. An access cost for at least a first and second access command in the command queue is generated, wherein each access cost comprises a seek length and a rotation latency. A first access command is selected from the command queue having a first access cost, and a window is defined relative to the first access cost and a first risk based penalty (RBP) of the first access command, wherein the first RBP represents a probability of missing a first data sector of the first access command. A second access command is selected from the command queue comprising a second access cost within the window. A choice is made between the first and second access commands in response to a second RBP of the second access command.
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