PHYSICAL ADDRESS MANAGEMENT IN SOLID STATE MEMORY

摘要

A storage system includes a memory controller connected to a solid state memory device and a read status table that tracks a pending read from the solid state memory device and a physical address of the solid state memory device that is associated with the pending read. The memory controller releases the physical address for reassignment when the read status table indicates that no pending reads are associated with the physical address. In certain embodiments, the read status table may be included within the memory controller. In certain embodiments, subsequent to the release of the physical address, erase operations may erase data at the physical address and the physical address may be reassigned to a new logical address by ensuing host write operations.

主权项

1. A storage system comprising:
a read status table comprising a pending read indication and an associated physical address of a solid state memory device, and; a memory controller connected to the solid state memory device that releases the physical address for reassignment when the read status table indicates that no pending reads are associated with the physical address.