How to make srtm data part of geoserver

Hi,

I have downloaded srtm data, which has the below structure:

srtm_51_08

srtm_51_08.hdr

srtm_51_08.tfw

srtm_51_08.tif

Now inside geoserver folder where do i copy-paste this “srtm_51_08” folder ?

I am using geoserver version 2.11.1.

When i pasted it inside \data_dir\workspaces\ folder, the geoserver started up with the warning:

" WARN [org.geoserver] - Ignoring workspace directory workspaces/srtm_51_08 "

How do i include it, so that it is not ignored by geoserver, as i want to use it in my app as below:

var globe = new Cesium.Globe(Cesium.Ellipsoid.WGS84);

var terrainProvider = new Cesium.GeoserverTerrainProvider({

url: “http://localhost:8080/geoserver/ows?service=wms&version=1.3.0&request=GetCapabilities”,

layerName: “srtm_51_08”,

});

globe.terrainProvider = terrainProvider;

http://geoserver.geo-solutions.it/edu/en/adding_data/add_geotiff.html describes how to add the GeoTIFF to GeoServer.