The queue depth is the maximum number of commands that can be queued on the system at the same time.
Q is the Queue Depth =Execution Throttle= Maximum Number of simultaneous I/O for each LUN on a particular path to the Storage Port.
Calculation of the maximum queue depth: The queue depth is the number of I/O operations that can be run in parallel on a device.
Q = Storage Port Max Queue Depth / (I * L),
I is the number of initiators per storage port
L is the quantity of LUNs in the storage group.
T = P * q * L
T = Target Port Queue Depth
P = Paths connected to the target port
Q = Queue depth
L = number of LUN presented to the host through this port
Execution Throttle= (Maximum Storage Port Command Queue) / (Host Ports)
