High IO WAIT

Database
Teradata Employee

High IO WAIT

Systems: TD15.10 on 6680 + Linux SuSE SLES11 + Viewpoint16.0

I have in the SLG-Tier 2 WDs: WD-Load 65%; WD-Report 25%; rest 10%.

Reports running with WD-Report are highly IO-bound. It now results in high IO WAIT on the system. High IO-WAIT leads to high CPU-WAIT for all Workloads in the SLG-Tier.

Is there any possibilities to free the WD-Load from suffering high IO-WAIT in WD-Report?