STORAGE MANAGEMENT IN HYBRID DRIVES

摘要

Methods for deciding whether to store data in a non-volatile memory (NVM) storage portion of a hybrid drive including the NVM storage portion and a disk storage portion are provided. One such method involves generating a queue for storing candidate addresses and a priority level for each of the candidate addresses, receiving a read command and a range of addresses for the disk storage portion, determining a relative distance between reads of a first address corresponding with a second address within the range of addresses, storing, when the relative distance is less than a relative distance threshold, a first candidate address, corresponding to the second address, and a respective priority level in the queue, and storing, when the priority level of the first candidate address is greater than a priority level threshold, data corresponding to the first candidate address in the NVM storage portion.

主权项

1. A method for deciding whether to store data in a non-volatile memory (NVM) storage portion of a hybrid drive comprising the NVM storage portion and a disk storage portion, the method comprising:
generating a queue for storing a plurality of candidate addresses and a priority level for each of the plurality of candidate addresses; receiving a read command and a range of addresses for the disk storage portion of the hybrid drive, wherein the range of addresses corresponds to the read command; determining a relative distance between reads of a first address corresponding with a second address within the range of addresses; storing, when the relative distance is less than a relative distance threshold, a first candidate address, corresponding to the second address, and a respective priority level in the queue; and storing, when the priority level of the first candidate address is greater than a priority level threshold, data corresponding to the first candidate address in the NVM storage portion of the hybrid drive.