Data storage device dynamically relocating data sectors based on map-out value

A data storage device comprising:

• a non-volatile storage medium (NVSM);
• and
• control circuitry configured to:
• define a plurality of data sectors and a plurality of reserve sectors in the NVSM;
• first utilize a first reserve sector to improve performance of the data storage device;
• detect a defect of a first data sector due to a first grown defect;
• and
• second utilize the first reserve sector as a spare sector to relocate the first data sector, wherein the control circuitry is further configured to first utilize the first reserve sector as part of a write cache, wherein the control circuitry is further configured to first utilize a second reserve sector as a spare sector to relocate a second data sector proximate the first data sector, wherein the control circuitry is further configured to:
• detect a defect of a third data sector due to a second grown defect;
• and
• second utilize the second reserve sector as a spare sector to relocate the third data sector.

A data storage device comprising:

• a non-volatile storage medium (NVSM);
• and
• control circuitry configured to:
• define a plurality of data sectors and a plurality of reserve sectors in the NVSM;
• first utilize a first reserve sector to improve performance of the data storage device;
• detect a defect of a first data sector due to a first grown defect;
• and
• second utilize the first reserve sector as a spare sector to relocate the first data sector, wherein the control circuitry is further configured to:
• generate a map-out value for each of a first plurality of the data sectors;
• and
• when the map-out value of a second data sector in the first plurality of data sectors exceeds a threshold, first utilize the first reserve sector to relocate the second data sector.

A data storage device comprising:

• a non-volatile storage medium (NVSM) means;
• and
• control circuitry coupled to the NVSM means, wherein the control circuitry is configured to:
• define a plurality of data sectors and a plurality of reserve sectors in the NVSM;
• and
• optimize use of the reserve sectors, wherein optimizing comprises:
• mapping a first logical block address (LBA) from a first data sector of the plurality of data sectors to a first reserve sector;
• when a map-out value of a second data sector in the plurality of data sectors exceeds a map-out value of the first data sector:
• map the first LBA from the first reserve sector back to the first data sector;
• and
• map a second LBA from a second data sector to the first reserve sector.