diff --git a/data/tileserver.layers.json b/data/tileserver.layers.json
deleted file mode 100644
index c708374..0000000
--- a/data/tileserver.layers.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "layers": [{
-    "id": 0,
-    "name": "Earth",
-    "from": -16,
-    "to": 160
-  },{
-    "id": 1,
-    "name": "Moon",
-    "from": 5000,
-    "to": 5500
-  },{
-    "id": 2,
-    "name": "Space",
-    "from": 6000,
-    "to": 10000
-  },{
-    "id": 3,
-    "name": "Mars",
-    "from": 15850,
-    "to": 17000
-  }]
-}
diff --git a/data/tileserver.properties b/data/tileserver.properties
deleted file mode 100644
index 5d966c5..0000000
--- a/data/tileserver.properties
+++ /dev/null
@@ -1,18 +0,0 @@
-minetest.db.url=jdbc:postgresql://postgres:5432/postgres
-
-tile.db.url=jdbc:postgresql://postgres-tiles:5432/postgres
-tile.cache.impl=DATABASE
-
-#tracker.matomo.id=1
-#tracker.matomo.url=https://analytics.rudin.io/piwik.js
-
-#tilerenderer.initialrendering.enable=true
-
-#log.tile.updatetimings=true
-tilerenderer.updateinterval=5
-#log.query.performance=true
-
-tilerenderer.maxupdateblocks=1000
-tile.rendering.strategy=ASAP
-
-prometheus.enable=true
diff --git a/doc/backup.md b/doc/backup.md
new file mode 100644
index 0000000..7517d34
--- /dev/null
+++ b/doc/backup.md
@@ -0,0 +1,37 @@
+
+# Server backup replication
+
+## Methodology
+
+Backups are taken daily with the help of lvm snapshots.
+Here the backup-script from a host on the private cluster:
+
+```sh
+#!/bin/sh
+cd $(dirname $0)
+
+# prepare variables
+TIMESTAMP=$(date +%Y-%m-%d_%H-%M-%S)
+REMOTE=root@pandorabox.io
+
+# create the LVM-snapshot on the main server
+ssh $REMOTE "/sbin/lvcreate -l 90%FREE -s -n backup /dev/mapper/vg0-data"
+
+# mount the snapshot data read-only (remote)
+ssh $REMOTE "mount -o ro /dev/mapper/vg0-backup /mnt/snapshot/"
+
+# rsync the snapshotted directory tree
+rsync -avz --bwlimit 8000 --delete ${REMOTE}:/mnt/snapshot/pandorabox.io/ /backup/pandorabox.io/
+
+# cleanup
+ssh $REMOTE "umount /mnt/snapshot"
+ssh $REMOTE "lvremove /dev/mapper/vg0-backup -f"
+
+# create incremental backups with borg
+borg create --ignore-inode .::${TIMESTAMP} /backup/pandorabox.io
+
+# prune old backups
+borg prune . --keep-daily 5 --keep-monthly 3 --keep-yearly 10
+```
+
+**NOTE**: The snapshot volume fills up with data during the backup process
\ No newline at end of file
diff --git a/doc/folder_structure.md b/doc/folder_structure.md
new file mode 100644
index 0000000..242f4a6
--- /dev/null
+++ b/doc/folder_structure.md
@@ -0,0 +1,48 @@
+# folder structure of the pandorabox server
+
+Server/Application root directory `/data/pandorabox.io`
+```
+/data
+ + /minetest
+  + /world
+ + /nginx
+ + /postgres-minetest
+ + /wiki
+/doc
+/docker
+/scripts
+docker-compose.yml
+psql.sh
+psql-mapserver.sh
+psql-wiki.sh
+create-export.sh
+convert-test.sh
+restart.sh
+```
+
+## restart.sh
+
+As the name suggests, restarts the minetest-server
+
+## convert-test.sh
+
+Converts the server to the test-instance (url's, announce-name, /news)
+**WARNING** Don't do this on the main server! This is intended to execute on a restored backup only!
+
+## psql.sh
+
+Starts a sql-shell on the main database (blocks, players)
+
+## /data/minetest/world
+
+The main directory for all things minetesty..
+
+## /data/minetest/world/worldmods
+
+All installed mods
+
+## create-export.sh
+
+Creates a server-extract with the main parts (blocks,mods,essential mod-data) to distribute
+**NOTE** This will create 2 files that amount to ca. 30 GB in the folder `/export`
+**WARNING** Don't do this on the main server, the daily backup _will_ replicate this!
diff --git a/docker-compose.yml b/docker-compose.yml
index 5d6d13a..a14e2b1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -12,7 +12,7 @@ services:
    - "postgres"
   volumes:
    - "./data/minetest:/data"
-   - "./data/minetest/debug.txt:/usr/local/debug.txt"
+   - "./data/minetest/debug.txt:/root/.minetest/debug.txt"
   working_dir: /data
   command: minetestserver --config /data/minetest.conf --world /data/world/ --quiet
   logging:
diff --git a/dump.sh b/dump.sh
deleted file mode 100755
index 531cd32..0000000
--- a/dump.sh
+++ /dev/null
@@ -1 +0,0 @@
-docker-compose exec postgres pg_dump -U postgres postgres
diff --git a/restart-and-cleanup.sh b/restart-and-cleanup.sh
deleted file mode 100755
index a43ec98..0000000
--- a/restart-and-cleanup.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-docker-compose stop minetest
-
-mv data/minetest/world/luaentities data/minetest/world/luaentities.bak
-mv data/minetest/world/mesecon_actionqueue data/minetest/world/mesecon_actionqueue.bak
-
-docker-compose start minetest && docker-compose logs -f --tail 200 minetest
-
diff --git a/scripts/check_inv_size.sh b/scripts/check_inv_size.sh
new file mode 100755
index 0000000..dc7292a
--- /dev/null
+++ b/scripts/check_inv_size.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+docker-compose exec postgres psql -U postgres -c "select player, inv_id, length(item) as size from player_inventory_items where player in (select name from player order by modification_date desc limit 20) order by size desc limit 30"
diff --git a/sql/changecount_column.sql b/sql/changecount_column.sql
deleted file mode 100644
index e554135..0000000
--- a/sql/changecount_column.sql
+++ /dev/null
@@ -1,18 +0,0 @@
-alter table blocks add column changecount bigint not null default 0;
-
-create index CONCURRENTLY blocks_changecount_index on blocks(changecount);
-
-create or replace function on_blocks_change_count() returns trigger as
-$BODY$
-BEGIN
-    NEW.changecount = OLD.changecount + 1;
-    return NEW;
-END;
-$BODY$
-LANGUAGE plpgsql;
-
-create trigger blocks_update_changecount
- before update
- on blocks
- for each row
- execute procedure on_blocks_change_count();
diff --git a/sql/import.sh b/sql/import.sh
deleted file mode 100755
index e257348..0000000
--- a/sql/import.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-#!/bin/sh
-cat changecount_column.sql | sudo docker-compose exec postgres psql -U postgres