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Generated January 22, 2018

Disk drive executing part of a linked disk command

Patent Number: 6,845,405

Patent Information

A disk drive is disclosed which links disk commands that access near sequential data sectors. The linked and non-linked disk commands are inserted into an input/output queue and selected for execution according to a rotational position optimization (RPO) algorithm. If an error occurs while executing a linked disk command, the disk commands are unlinked and at least one of the unlinked disk commands is executed. The residual unlinked disk commands are inserted back into the input/output queue for later execution in an order determined by the RPO algorithm.
Patent Number: 6,845,405
Issue Date: 2005-01-18

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Patents cited by this patent

Patent Title
6,711,628 Disk drive aborting a write command before a last target sector reached if an abnormal condition detected and selecting a second command according to a rotational positioning optimization algorithm
6,272,565 Method, system, and program for reordering a queue of input/output (I/O) commands into buckets defining ranges of consecutive sector numbers in a storage medium and performing iterations of a selection routine to select and I/O command to execute
5,991,825 System for handling missed revolution in a disk drive by aborting the execution of primary command and executing secondary command if a missed revolution occurs

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