Home > Storage > PowerScale (Isilon) > Product Documentation > Networking > Dell PowerScale: Network Design Considerations > OneFS releases prior to 9.9.0.0
PowerScale OneFS releases prior to 9.9.0.0 do not provide an option for tagging packets with a specified DSCP marking. As a best practice, configure the first hop ports on switches connected to PowerScale nodes to insert DSCP values. Note that OneFS does retain headers for packets that already have a specified DSCP value.