1. A system comprising: a memory sub-system comprising: a plurality of memory cartridges configured to store data; and a device configured to initiate requests to the plurality of memory cartridges in response to an event; and a host controller operably coupled to the memory sub-system and comprising an arbiter operably coupled to the device and the memory cartridges, wherein the arbiter is configured to receive the requests from the device and to schedule the execution of the requests.