Adjustment of compression ratios for data storage

摘要

Storing data from a volatile memory of a host in a non-volatile memory (NVM) of a data storage device (DSD). Data from the volatile memory of the host is identified which has been compressed with a first compression ratio. The identified data is decompressed and a second compression ratio is determined based on a time to restore the data to the volatile memory of the host and characteristics of the NVM. At least a portion of the decompressed data is recompressed with the second compression ratio and at least a portion of the recompressed data is stored in the NVM.

主权项

1. A method for storing data from a volatile memory of a host in a non-volatile memory (NVM) of a data storage device (DSD), the method comprising:
identifying data from the volatile memory of the host which has been compressed with a first compression ratio; decompressing the identified data; determining a second compression ratio based on a time to restore the data to the volatile memory of the host and characteristics of the NVM; recompressing at least a portion of the decompressed data with the second compression ratio during a hibernation process; storing at least a portion of the data recompressed with the second compression ratio in the NVM; and in response to a request from the host for the stored data when resuming from hibernation after the hibernation process:
decompressing, by the DSD, the stored data; andrecompressing, by the DSD, the decompressed stored data using a compression algorithm used by an operating system of the host.