Since upgrading our environment to ESXi/vCenter 6.5U2 we have been experiencing "VM Disk Latency" according to VMAN. Frequently it will show latency approaching 25 seconds! After hours of trying to find the cause of this latency we are starting to wonder if the data in Orion could be incorrect. We can not find any evidence of latency exceeding 8ms in vCenter nor on the hosts using esxtop.
Where is VMAN pulling the VM Disk stats from and how can I validate that an issue actually exists?
*Note: VMAN 8.2.1 HF1