DATA STORAGE DEVICE AND METHOD OF OPERATING THE SAME

摘要

An operating method of a data storage device including nonvolatile memory devices includes making a victim block list for victim blocks for which a merge operation is to be performed and copying valid pages of the victim bocks to a merge block. The method also includes determining whether there is a victim block which has an erase-held valid page selectively erasing the victim blocks included in the victim block list, according to which victim blocks have an erase-held page, and updating the victim block list according to which victim blocks are erased.

主权项

1. A method of operating a data storage device including one or more nonvolatile memory devices, the method comprising:
making a victim block list, the list including information identifying blocks of the memory devices for which a merge operation is to be performed; copying valid pages of the victim blocks included in the victim block list, to a merge block; determining whether a victim block includes an erase-held valid page, the erase-held valid page being paired with a paired page which has not been copied to the merge block; selectively erasing one or more victim blocks included in the victim block list, wherein the one or more victim blocks are selected for erasing based on the one or more victim blocks not including an erase-held valid page; and updating the victim block list according to which victim blocks are selected for erasing.