HEAT-BASED KEY-VALUE SLOT ORGANIZATION FOR FLASH-OPTIMIZED DATA PLACEMENT IN MULTI-TIERED STORAGE SYSTEMS

摘要

For flash-optimized data placement in multi-tiered, log-structured storage systems, based on at least one key-level data heat metric, sets of key-value pairs determined to exhibit similar data heat characteristics are grouped. Those key-value pairs exhibiting a hotter data heat characteristic are placed into a separate flash memory log-structured data container than those key-value pairs exhibiting a colder data heat characteristic.