got 20 250GB hard disks today (same as the ones we use already in both the frontend and the second framebuilder / fileserver). There is already a spare disk in the frontend which (for unknown reasons) we don't use for a simple mirror of the main disk (as we do it in the other computer already) So we should create a simple raid and use that disk for it. Before we do that we should re-arrange the order as that disk is i think sdc, sda is the boot disk, sdb full frames and sdd trend data. So it would be nice to have sda/sdb the raid and then sdc+sdd the data.