Sector metrics to estimate health of written data

A data storage device comprising:

• a disk comprising a plurality of data tracks, including at least a data track N and a data track N−1;
• a head actuated over the disk;
• and
• one or more processing devices configured to:
• identify, during a track write on the data track N, a write abort event;
• read one or more sectors of the data track N−1, wherein the reading comprises collecting one or more sector metrics for the one or more sectors;
• verify each of the one or more sectors based upon the one or more sector metrics;
• assigning each of the one or more sectors as a readable sector or a non-readable sector;
• and wherein the one or more processing devices are further configured to:
• read the data track N−1 with track parity, wherein reading the data track N−1 with track parity comprises using at least one decoded bit sequence to compute an error rate prior to applying said track parity.

A data storage device comprising:

• a disk comprising a plurality of data tracks, including at least a data track N and a data track N−1;
• a head actuated over the disk;
• and
• one or more processing devices configured to:
• identify, during a track write on the data track N, a write abort event;
• read one or more sectors of the data track N−1, wherein the reading comprises collecting one or more sector metrics for the one or more sectors;
• verify each of the one or more sectors based upon the one or more sector metrics;
• assigning each of the one or more sectors as a readable sector or a non-readable sector;
• and
• wherein the one or more processing devices are further configured to:
• retain the one or more collected sector metrics for one or more of:
• scheduling a read of at least another one of the plurality of data tracks, and
• processing a read of at least another one of the plurality of data tracks.

A method of operating a data storage device, comprising:

• identifying, during a track write on a data track N, a write abort event based upon an expected risk for a data track N−1 exceeding a first risk threshold;
• reading the data track N−1, wherein the reading comprises reading one or more sectors of the data track N−1 and collecting one or more sector metrics for the one or more sectors;
• estimating a health metric of each of the one or more sectors by determining if the one or more sector metrics is within a range below the first risk threshold and above a second risk threshold;
• assigning each of the one or more sectors as one of a readable sector or a non-readable sector based on the health metric of each of the one or more sectors;
• and
• continuing the track write on the data track N upon:
• (1) determining each of the one or more sectors is a readable sector, or (2) recovering the data track N−1 and relocating the data track N−1 based on determining at least one of the one or more sectors is a non-readable sector.

One or more processing devices, comprising:

• means for identifying, during a track write on a data track N, a write abort event based upon an expected risk for a data track N−1 exceeding a first risk threshold;
• means for reading the data track N−1, wherein the reading comprises reading one or more sectors of the data track N−1 and collecting one or more sector metrics for the one or more sectors;
• means for estimating a health metric of each of the one or more sectors by determining if the one or more sector metrics is within a range below the first risk threshold and above a second risk threshold, wherein the estimating comprises assigning each of the one or more sectors as one of a readable sector or a non-readable sector based upon the health metric of each of the one or more sectors;
• and
• means for continuing the track write on the data track N upon:
• (1) determining each of the one or more sectors is a readable sector, or (2) recovering the data track N−1 and relocating the data track N−1 based on determining at least one of the one or more sectors is a non-readable sector.