RDD PERSISTENCE METHOD BASED ON SSD AND HDD HYBRID STORAGE SYSTEM

摘要

The present invention provides an RDD persistence method based on an SSD and HDD hybrid storage system, comprising: an RDD module transmits a block identifier in the RDD module and a preset persistence level of data in the RDD module to a block manager; a disk block manager transmits the preset persistence level to a device adapter; the device adapter receives the preset persistence level of the data and reads two directory management variables in a configuration file, matches the preset persistence level with a temporary file directory in a corresponding directory management variable according to the preset persistence level of the data, and returns the temporary file directory obtained by matching to the disk block manager; the disk block manager obtains a file name according to the block identifier, obtains a data storage address according to the temporary file directory obtained by matching and the file name, and returns the data storage address to the block manager; the block manager stores the data in the RDD module in an SSD or an HDD according to the data storage address.