Memory system with multiple striping of RAID groups and method for performing the same

A method of storing data in a memory system, including:

• providing a controller in communication with a plurality of memory modules and with a user;
• each memory module of the plurality of memory modules comprise NAND FLASH memory circuits operable to perform a read data operation, to perform a write data operation, or to perform an erase operation;
• and
• in response to data received from the user by the controller to be stored in the memory system:
• computing redundancy data for the user data;
• selecting a group of memory modules of the plurality of memory modules;
• performing the write data operation to memory modules of the selected group of memory modules for the user data and the redundancy data;
• and,
• controlling at least one of erasing or reading operations of the memory modules of the group of memory modules where the user data or redundancy data is stored such that:
• in response to a request for stored data received from the user:
• when the erase operation or the write data operation prevents the read data operation on one or more memory modules where the requested user data is stored, responding to the user request for data stored on one or more memory modules of the group of memory modules comprises reading sufficient stored data and redundancy data from other memory modules of the group of memory modules and reconstructing the requested stored user data.

A memory system, comprising:

• a controller in communication with a plurality of memory modules the memory system operable to perform:
• a write data operation responsive to a request from a user to store data;
• a read data operation in response to a request from the user for previously stored data;
• or, an erase operation;
• and
• a group of memory modules of the plurality of memory modules configured such that data received from the user, and redundancy data for the user data that is computed by the memory system, is written by the write data operation,
• wherein the memory system is operable to perform the write data operation on the memory modules of the group of memory modules such that, responsive to a user request to read data previously stored in one or more memory modules of the group of memory modules, the requested stored user data is provided in response to the user request;
• and, when the write data operation prevents the read data operation from being performed on the memory module of the group of memory modules where the requested user data is stored, sufficient previously stored data and redundancy data for the previously stored data is read from memory modules of the group of memory modules to provide the requested stored user data, with a time delay of less than a time period required to perform a write data operation by the memory module.