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USE OF GUARD BANDS AND PHASED MAINTENANCE OPERATIONS TO AVOID EXCEEDING MAXIMUM LATENCY REQUIREMENTS IN NON-VOLATILE MEMORY SYSTEMS
USE OF GUARD BANDS AND PHASED MAINTENANCE OPERATIONS TO AVOID EXCEEDING MAXIMUM LATENCY REQUIREMENTS IN NON-VOLATILE MEMORY SYSTEMS
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机译:使用警戒线和分阶段的维护操作来避免超出非易失性存储系统的最大延迟时间
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摘要
Techniques are presented for performing maintenance operations, such as garbage collection, on non-volatile memory systems will still respecting the maximum latency, or time-out, requirements of a protocol. A safety guard band in the space available for storing host data, control data, or both, is provided. If, on an access of the memory, it is determined that the guard band space is exceeded, the system uses a recovery back to the base state by triggering and prioritising clean-up operations to re-establish all safety guard bands without breaking the timing requirements. To respect these timing requirements, the operations are split into portions and done in a phased manner during allowed latency periods.
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