Hosts, memory systems, methods of operating thereof, electronic apparatuses and computer-readable storage mediums

A method of operating a host, wherein the host is coupled with a memory system supporting a flexible data placement function;

• the memory system comprises a memory device, and the memory device comprises K dies;
• the K dies are divided into L reclaim groups, and each reclaim group comprises at least one die;
• K and L are positive integers greater than or equal to 2;
• and the method comprises:
• receiving N write requests, wherein each write request carries corresponding reclaim group information, and N is a positive integer;
• and
• placing the N write requests in M request sets, wherein write requests carrying the same reclaim group information are placed in different ones of the request sets, and M is a positive integer less than or equal to N, wherein an absolute value of a difference value between numbers of write requests comprised in any two of the M request sets is less than or equal to a preset value.

A memory system, comprising:

• a memory device comprising K dies, the K dies being divided into L reclaim groups, each reclaim group comprising at least one die, and K and L being positive integers greater than or equal to 2;
• and
• a memory controller coupled with the memory device and configured to:
• receive M write commands, wherein each of the M write commands corresponds to one request set, each request set comprises at least one write request, and write requests carrying same reclaim group information are comprised in a different request set;
• and M is a positive integer, wherein an absolute value of a difference value between numbers of write requests comprised in any two of the M request sets is less than or equal to a preset value.