Hi, thanks.
You will need to find out where the latency resides. Where are you seeing the 500ms latency?
A: sorry, it was 150ms. I saw in vmware performance manager for that machine. in my guest S.O ( Win2k8 r2 ) shows some high I/O too
Also, check for SCSI communication errors on the vmkernel logs, sometimes the problem resides on a bad cable/switch port.
where is vmkernel logs ? I can't find it in the Vcenter manager. there isn't any alarm about that issue in vcenter manager.
thanks