Just an update , thought I'd try a 15 series Driver since Ivan said to wait for the latest release......
but latest driver 15.2.0.1020 does not fix this issue either ,
so I'm back on 12.9.4.1000
So far ALL Drivers above 13.x.x.x cause this issue.
Also I Did try to defrag my raid today, and I can with 12.9.4.1000 Defrag manually using defrag /D /U /V X: ............. where X is the drive letter of the array Disk
I ' m however not sure If I should use this on the SSD OD Drive too ? ie defrag /D /U /V C: since I thought SSD's should not be optimized?
KB