A control system for an actuator arm assembly of a hard disk drive reduces the Non-Repeatable Run-out caused from external sources exciting higher-frequency actuator arm assembly modes. A dielectric liner stack of a dielectric metal oxide layer and a silicon nitride layer is formed in the shallow trench, followed by deposition of a shallow trench isolation fill portion. By setting a distance between the nozzle and the culture medium to 0. The outputs from the array when the scene is in its normal condition and the image is moved across the array comprise a set of signals corresponding to a reference image, which may be compared with the corresponding outputs from the array when the image is moved across the array on a subsequent occasion. The composite system response is measured at a plurality of operating frequencies and at the plurality of offset values. A limit on the number of VPNv4 routes per VPN for a Route Distributor or a group of RDs associated with a VPN is defined, at an Autonomous System Border Router.