可以用mongodump來做MongoDB 的庫或表級別的備份，下面舉例說明:
備份my_mongodb數據庫

[root@localhost bin]# ./mongodump -d my_mongodb
connected to: 127.0.0.1
DATABASE: my_mongodb???? to???? dump/my_mongodb
??????? my_mongodb.system.indexes to dump/my_mongodb/system.indexes.bson
???????????????? 1 objects
??????? my_mongodb.user to dump/my_mongodb/user.bson
???????????????? 2 objects
[root@localhost bin]# ll
總計 67648
-rwxr-xr-x 1 root root 7508756 2011-04-06 bsondump
drwxr-xr-x 3 root root??? 4096 04-10 23:54 dump
-rwxr-xr-x 1 root root 2978016 2011-04-06 mongo

此時會在當前目錄下創建一個 dump目錄，用于存放備份出來的文件 也可以指定備份存放的目錄，

connected to: 127.0.0.1
DATABASE: my_mongodb???? to???? my_mongodb_dump/my_mongodb
??????? my_mongodb.system.indexes
my_mongodb_dump/my_mongodb/system.indexes.bson
???????????????? 1 objects
??????? my_mongodb.user to my_mongodb_dump/my_mongodb/user.bson
???????????????? 2 objects
[root@localhost bin]#

[root@localhost bin]# ./mongorestore -d my_mongodb my_mongodb_dump/*
connected to: 127.0.0.1
Wed Apr 11 00:03:03 my_mongodb_dump/my_mongodb/user .bson
Wed Apr 11 00:03:03????? going into namespace [my_mongodb.user]
Wed Apr 11 00:03:03????? 2 objects found
Wed Apr 11 00:03:03 my_mongodb_dump/my_mongodb/system.indexes.bson
Wed Apr 11 00:03:03????? going into namespace [my_mongodb.system.indexes]
Wed Apr 11 00:03:03 { name: "_id_", ns: "my_mongodb.user", key: { _id: 1 }, v: 0 }
Wed Apr 11 00:03:03????? 1 objects found
[root@localhost bin]#