diff --git a/backup.sh b/backup.sh
new file mode 100644
index 0000000..2a19dff
--- /dev/null
+++ b/backup.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+COPIES=2
+BASE=/mnt
+
+echo
+date
+echo
+echo "dumping databases"
+i=$(($COPIES - 1))
+while [ $i -ge 0 ];
+do
+        [ -s $BASE/databases.sql.$i.gz ] && mv $BASE/databases.sql.$i.gz $BASE/databases.sql.$(($i+1)).gz
+        i=$(($i-1))
+done
+/usr/bin/pg_dumpall -U $DB_USERNAME | gzip >$BASE/databases.sql.0.gz
\ No newline at end of file