diff --git a/deploy/2server.sh b/deploy/2server.sh
index bedbf4d..0cf938f 100755
--- a/deploy/2server.sh
+++ b/deploy/2server.sh
@@ -49,7 +49,7 @@ echo "==================================================================="
 echo "Bringing remote Docker up to date…"
 $SSH mkdir -p $REMOTE_DOCKER_COMPOSE_DIR
 $SCP \
-    $DOCKER_DEPLOYDIR/$PROJECT_NAME/docker/{docker-compose.yml,renew-letsencrypt.sh} \
+    $DOCKER_DEPLOYDIR/$PROJECT_NAME/docker/{docker-compose.yml,renew-letsencrypt.sh,mongo-backup.{cron,sh}} \
     $DEPLOYHOST:$REMOTE_DOCKER_COMPOSE_DIR
 $SSH -T <<EOT
 set -e
diff --git a/docker/mongo-backup.cron b/docker/mongo-backup.cron
new file mode 100644
index 0000000..d9b1e0a
--- /dev/null
+++ b/docker/mongo-backup.cron
@@ -0,0 +1,5 @@
+# Change to suit your needs, then place in /etc/cron.d/mongo-backup
+# (so remove the .cron from the name)
+
+MAILTO=yourname@youraddress.org
+30 5 * * * root /root/docker/mongo-backup.sh
diff --git a/docker/mongo-backup.sh b/docker/mongo-backup.sh
new file mode 100755
index 0000000..aebcbb5
--- /dev/null
+++ b/docker/mongo-backup.sh
@@ -0,0 +1,27 @@
+#!/bin/bash -e
+
+BACKUPDIR=/data/storage/db-bak
+DATE=$(date +'%Y-%m-%d-%H%M')
+ARCHIVE=$BACKUPDIR/mongo-live-$DATE.tar.xz
+
+# Just a sanity check before we give it to 'rm -rf'
+if [ -z "$DATE" ]; then
+    echo "Empty string found where the date should be, aborting."
+    exit 1
+fi
+
+
+# /data/db-bak in Docker is /data/storage/db-bak on the host.
+docker exec mongo mongodump -d cloud \
+    --out /data/db-bak/dump-$DATE \
+    --excludeCollection tokens \
+    --excludeCollection flamenco_task_logs \
+    --quiet
+
+cd $BACKUPDIR
+tar -Jcf $ARCHIVE dump-$DATE/
+rm -rf dump-$DATE
+
+rm -v $(ls $BACKUPDIR/mongo-live-*.tar.xz | head -n -7)
+
+rsync -4 -va $BACKUPDIR/mongo-live-*.tar.xz cloud-backup@swami-direct.blender.cloud:/data/cloud-backup/