At an interval of every 5 minutes, an ESX host such as ESXi 5.x sends REPORT LUN commands and discovers any new LUNs.
On ESXi 5.x, the following vmkernel log message is not harmful and can be ignored:
34:41.371Z cpu0:7701)WARNING: ScsiDeviceIO: 6227: The
device naa.50002ac00026011b does not permit the system to change the sitpua bit to 1.
For ESXi 5.x, the Virtual Disk max disk can be only 2 TB, even though the physical LUN seen on the system is 16 TB.
