I would be interested to know how you back up your storage and what tools you use.
In our development environment we use a NFS which is backed up via a cronjob every 4 hours.
MySQL and MongoDB are also backed up.
In the live environment we don't use NFS for many reasons.
Here I ask myself how I can backup the single read write volumes.
I have thought of it this way until now: I shut down the deployment with a cronjob, then mount the storage into a backup image, when that is done the deployment is started again.
How do you do that?