Verifying data integrity of a non-volatile memory system during data caching process

A method, in a memory system, for verifying data integrity of a non-volatile memory system during data caching process, the method comprising:

• responsive to powering on a storage controller, wherein the storage controller comprises a volatile memory and a non-volatile memory, the volatile memory stores cache data for input/output operations performed by the storage controller, and the non-volatile memory hardens cache data from the volatile memory responsive to a power event, and concurrent with the storage controller performing input/output operations using the volatile memory, verify, by a memory system controller in the memory system, the non-volatile memory, wherein verifying the non-volatile memory comprises:
• programming a non-volatile memory with a set of test patterns;
• reading the set of test patterns from the non-volatile memory;
• verifying whether the non-volatile memory stored the set of test patterns correctly;
• and
• posting a failure status to the storage controller responsive to the non-volatile memory storing the set of test patterns incorrectly.

A memory system comprising:

• a controller, wherein the controller detects a power event from a power supply that provides power to a storage controller and the memory system;
• a volatile memory, wherein the volatile memory stores cache data for input/output operations performed by a storage controller;
• and
• a non-volatile memory, wherein the controller hardens the cache data from the volatile memory for the storage controller to the non-volatile memory responsive to the power event;
• wherein responsive to powering on the storage controller and concurrent with the storage controller performing input/output operations using the volatile memory, the controller verifies the non-volatile memory, wherein verifying the non-volatile memory comprises:
• programming the non-volatile memory with a set of test patterns;
• reading the set of test patterns from the non-volatile memory;
• verifying whether the non-volatile memory stored the set of test patterns correctly;
• and
• posting a failure status to the storage controller responsive to the non-volatile memory storing the set of test patterns incorrectly.