It is a house shaped object with a roof on the top. At the base there are 2 rectangles like drawers that have a big black dot on the far left side. It looks like a combination of a house and a file cabinet.
This Root Server icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 5,700 icons, all in the same style and quality.