Hi
We were faced to the same issue with slow disk performace on RAID6 on Hyper-V cluster. Finally we decided to change RAID to RAID10 which is much more faster on MSA2050. I'm afraid there is some bug on MSA which slow down disk performace on RAID6. The disk performace we saw on RAID6 was variable from 6MB/s to 200MB/s. On RAID10 is consistent 1000MB/s (We used Crystaldiskmark)
Radan
