PharoCloud added another starter appliance that is easy to use: "Pharo + MongoDB".
Basically an embedded MongoDB runs locally in this appliance
and you can use Mongo or other packages in Pharo to access it. Maybe you already know that when loading the Voyage project is very easy to do persistence in
Pharo with MongoDB. To get started with Voyage use this or this.
You can read more details on this new PharoCloud offer here.