Since the stoney cloud is (as the name says already) a cloud solution, it makes sense to have a backend (in our case openLDAP) involved in the whole process. Like that it is possible to run the backup jobs decentralized on every vm-node. The control instance can then modify the backend, and theses changes are seen by the diffenrent backup daemons on the vm-nodes. So the communication could look like shown in the following picture (Figure 1):
[[File:Daemon-communication.png|500px800px|thumbnail|none|Figure 1: Communication between the control instance and the prov-backup-kvm daemon through the LDAP backend]]
=== Control-Instance Daemon Interaction for creating a Backup with LDIF Examples ===