A head slider having a slider body with a disc facing surface and a bearing plane is provided. A first recessed area and a second recessed area are positioned on the disc facing surface and recessed from the bearing plane. A rail on the disc facing surface has a channel that includes a first side edge proximate the first recessed area and a second side edge proximate the second recessed area. The channel is isolated from the first recessed area and open to the second recessed area.

 
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