Global Pool of Garbage Collection Units (GCUs) in a Shared Non-Volatile Memory Device

An apparatus comprising:

• a non-volatile memory (NVM) comprising a population of semiconductor memory dies to which are connected a number of parallel channels;
• a set provisioning manager circuit configured to apportion the semiconductor memory dies into a plurality of die sets each configured to store user data blocks associated with a different user into user garbage collection units (GCUs) that are allocated and erased as a unit, the set provisioning manager circuit further configured to form at least one global GCU in each die set configured to store user data blocks from a different user associated with a different die set;
• a utilization monitor circuit configured to detect an imbalance condition in which a workload traffic level of a first die set exceeds a workload traffic level of a second die set responsive to host I/O commands received from associated users;
• and
• a workload manager circuit configured to direct at least one host I/O command for the first die set for servicing by a selected global GCU of the second die set responsive to the detected imbalance condition.