Western Digital Technologies, Inc.

Jinyoung Kim

Kroum Stanimirov Stoev

Lisha Wang

Jinghuan Chen

Andrew Yu-Jen Wang

Aspects of a storage device including a memory and a controller are provided. The controller may determine to perform garbage collection on a superblock. During the garbage collection process, the controller will typically move the superblock into an erase pool for erasing the superblock. However, aspects of the disclosure are directed to a method of measuring a raw bit error rate (RBER) of the superblock prior to erasure. The measured RBER may be used to estimate a data retention time of the storage device and provide the customer with an early warning notification if a health metric of the storage devices reaches a threshold retention time.

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Fremont, CA, United States of America

Jinyoung Kim