The queue depth is the number of I/O operations that can
be run in parallel on a device. It is usually possible to set a limit
on the queue depth on the subsystem
device driver (SDD) paths
(or equivalent) or the host bus adapter (HBA).
Ensure that you configure the servers to limit the queue depth
on all of the paths to the
SAN Volume Controller disks in configurations that contain a large number of servers
or virtual disks (VDisks).
Note: You might have a number of servers
in the configuration that are idle or do not initiate the calculated
quantity of I/O operations. If so, you might not need to limit the
queue depth.