script like this would change those settings
PowerCLI C:\> Get-Datastore <Datasctore Name>|Get-View|?{$_.Summary.Accessible -eq $true -and $_.Capability.StorageIORMSupported -and $_.Summary.MultipleHostAccess}|%{(Get-View (Get-View ServiceInstance).Content.StorageResourceManager).ConfigureDatastoreIORM_Task($_.MoRef, (New-Object VMware.Vim.StorageIORMConfigSpec -Property @{enabled=$true; congestionThresholdMode="automatic"; percentOfPeakThroughput="90"; statsAggregationDisabled=$true; statsCollectionEnabled=$true}))}