Multi-host bandwidth management considering external and internal traffic

A data storage device, comprising:

• a memory device;
• and
• a controller coupled to the memory device, wherein the controller is configured to:
• allocate performance bandwidth to one or more virtual functions (VFs) associated with read and write commands from one or more host devices;
• allocate performance bandwidth to a dummy VF associated with internal data storage device operations;
• determine that the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VF;
• determine whether internal operations of the data storage device are above a threshold;
• decrease the performance bandwidth allocated to the one or more VFs based on determining that internal operations are above the threshold and the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VF;
• and
• maintain the performance bandwidth allocated to the dummy VF based on determining that internal operations are above the threshold during the decreasing and the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VE.

A data storage device, comprising:

• means for storing data;
• and
• a controller coupled to the means for storing data, wherein the controller is configured to:
• allocate performance bandwidth to a first virtual function (VF) and a second VF associated with read and write commands from one or more host devices;
• allocate performance bandwidth to a dummy VF associated with internal data storage device operations;
• determine that the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VF;
• determine whether internal operations of the data storage device are above a threshold;
• decrease the performance bandwidth allocated to the first VF and the second VF based on determining that internal operations are above the threshold and the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VE;
• and
• maintain the performance bandwidth allocated to the dummy VF during the decreasing based on determining that internal operations are above the threshold and the data storage device cannot provide 100 percent performance of the performance bandwidth allocated to the dummy VF.