Here is a comparative shot when writing 100 uncompressible data. It's the same scale as the screen shot in post #66 - 0.1, but I have zoomed in to get more detail.
I can see the same "hang" just after a new loop starts.
Avg write is 48.32MB's (according to hIOmon) The highest ResponseTime_Max_Control is 5.215s.
Despite the overwhelming evidence I'm a bit suspicious that somehow compression is still occurring to some extent.
Opps I just noticed that in the 1st screen shot in post #66 the logical disk is being monitored. In post #106 I captured the physical disk level. They both read the same anyway.
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