Non-volatile hybrid memory

摘要

Memory units and computer systems are provided. The computer systems include a memory unit. The memory unit includes a stable storage unit, an unstable storage unit, and a controller. The unstable storage unit stores pending write operations for the stable storage unit. The controller is configured to determine the locations in the unstable storage that store the pending write information and to selectively write the pending write operations to the stable storage unit when power to the memory unit is interrupted.

主权项

1. A memory unit comprising:
a stable storage unit; an unstable storage unit that stores pending write operations for the stable storage unit; a set of status indicators, each status indicator associated with a corresponding portion of the unstable storage unit, wherein each status indicator is configured to be set to indicate whether the information stored in the corresponding portion includes a pending write operation; and a controller configured to, when power to the memory unit is interrupted:
scan the corresponding status indicator to determine whether each portion of the unstable storage unit includes a pending write operation;identify, based on the scan, particular locations in the unstable storage unit that store the pending write operations; andselectively write the pending write operations to the stable storage unit, the selectively writing comprising writing data to the stable storage unit only from the particular locations in the unstable storage unit.