Defect management policies for nand flash memory

A nonvolatile storage system, comprising:

• a nonvolatile memory (NVM) controller;
• one or more NVM devices communicably coupled to the NVM controller;
• and
• an NVM defect management policy engine communicably coupled to the NVM controller, wherein the NVM defect management policy engine is operative:
• to monitor a plurality of trigger events for detecting possible defects in at least one NVM device, each of the plurality of trigger events having an associated type;
• having monitored at least one trigger event, to determine the type of the trigger event;
• and
• to apply at least one defect management policy to the NVM device based on the type of the trigger event.

A nonvolatile storage system including one or more nonvolatile memory (NVM) devices, the system comprising:

• means for monitoring a plurality of trigger events for detecting possible defects in at least one NVM device, each of the plurality of trigger events having an associated type;
• having monitored at least one trigger event, means for determining the type of the trigger event;
• and
• means for applying at least one defect management policy to the NVM device based on the type of the trigger event.

A computer-readable storage medium including executable instructions for accessing data storable within a non-volatile memory (NVM) device in a computer system, the computer system including at least one processor, the computer-readable storage medium comprising executable instructions:

• to monitor a plurality of trigger events for detecting possible defects in at least one NVM device, each of the plurality of trigger events having an associated type;
• having monitored at least one trigger event, to determine the type of the trigger event;
• and
• to apply at least one defect management policy to the NVM device based on the type of the trigger event.