File System Storage - webbukkit/dynmap GitHub Wiki

This option is the default storage option of Dynmap. It is the most simple storage layout, but has it's drawbacks, for example while rendering, dynmap creates by default thousands of tiles, each tile a few kiloBytes in size.

The generated tiles are stored in dynmap/web/tiles/<worldname>/<prefix>, where is the name of the world, and is the tile storage prefix defined either in worlds.txt or in the designated perspectives. In the folder you might find images with a lot of "z"s in front of the name. Those are the "zoomout tiles" which get rendered for each defined zoomout level, and have the amount of "z"s designated to the level that they belong to. Each zoom level is half in X and half in Y size compared to the previous level.