SELECTIVE INITIALIZATION OF STORAGE DEVICES FOR A LOGICAL VOLUME
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United States of America Patent
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Apr 20, 2017
app pub date -
Oct 15, 2015
filing date -
Oct 15, 2015
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Methods and structure for initializing storage devices for a logical volume. One embodiment includes a storage controller with an interface and a control unit. The control unit generates a logical volume, assigns storage devices to the logical volume, generates Small Computer System Interface (SCSI) MODE SENSE commands, and transmits the SCSI MODE SENSE commands via the interface, thereby accessing SCSI mode pages. The control unit also analyzes the SCSI mode pages to determine whether the assigned storage devices have already been initialized by setting available bits in the logical volume to a uniform value. If the control unit determines that each of the assigned storage devices has not already been initialized, the control unit initializes at least one of the assigned storage devices. If the control unit determines that each of the assigned storage devices has already been initialized, the control unit foregoes initialization for the storage devices.
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