Raided MEMORY SYSTEM

A method of operating a memory system, the method comprising:

• receiving a request from an external source;
• converting the request into at least one command for operation of a memory controller of a plurality of memory controllers of the memory system such that data protected by allocating data and redundancy data to memory modules in communication with at least one memory controller of the plurality of memory controllers;
• sending the command to at the least one of the memory controller associated with the protected data;
• receiving an acknowledgment of receipt of the command from the all of the memory controllers to which the command was sent;
• assigning a global sequence number (GSN) to the command;
• associating the GSN with the command at the memory controller;
• and,
• for each memory module in communication with the memory controller:
• sending the command with a lowest GSN at the memory controller and addressed to the memory module to the memory module.

A computer software product, comprising:

• instructions stored on a non-volatile computer readable medium, causing a processor of a group of processors in communication with at least one memory controller having a plurality of memory modules to perform the steps of:
• receiving a request from an external source;
• converting the request into at least one command for operation of where data related to the request is stored or read such that the data is protected by redundancy data;
• sending the command to at least one of the memory controllers;
• receiving an acknowledgment of receipt of the command from the all of the memory controllers to which the command was sent;
• assigning a global sequence number (GSN) to the command;
• associating the GSN with the command at the memory controller;
• and,
• for each memory module in communication with the memory controller:
• sending the command with the lowest GSN and addressed to the memory module.

A memory system, comprising,

• a plurality of RAID controllers operable to receive requests for operations from at least one external user;
• a plurality of memory controllers communicating with at least some of the plurality of RAID controllers;
• and
• a plurality of memory modules, wherein a group of memory modules is associated with a memory controller of the plurality of memory controllers, and at least one of a group of memory modules associated with a memory controller of the group of memory controllers form a RAID group, or a group memory modules associated with a group of the plurality of memory controllers form a RAID group;
• wherein a same command from a RAID controller of the plurality of RAID controllers is dispatched to at least one of the plurality of memory controllers of the plurality of memory controllers whose memory modules form the RAID group and a unique global serial number (GSN) is assigned to the same command at each of the memory controllers.