Systems and methods for nonvolatile memory performance throttling

摘要

Systems and methods for nonvolatile memory (“NVM”) performance throttling are disclosed. Performance of an NVM system may be throttled to achieve particular data retention requirements. In particular, because higher storage temperatures tend to reduce the amount of time that data may be reliably stored in an NVM system, performance of the NVM system may be throttled to reduce system temperatures and increase data retention time.

主权项

1. A method for maximizing data retention in a memory system, the method comprising:
receiving temperature information and cycle count data associated with a portion of a nonvolatile memory (“NVM”) of the memory system from a memory of the memory system; determining a maximum temperature for storing data in the portion of the NVM to meet a predetermined data retention target based on the retrieved temperature information and the cycle count data; and throttling the performance of the memory system based at least in part on to the determining, wherein the throttling the performance comprises deactivating a first subset of NVM dies such that a second subset of NVM dies are not deactivated, wherein the maximum number of NVM dies in the second subset is calculated as the maximum temperature minus an environmental temperature of the memory system divided by a temperature added to the memory system by each active NVM die of the memory system.