01 / THE ROLE
In this lab.
The QNAP NAS provides shared storage for selected persistent application data and backup-related storage. The lab also uses local disks, bind mounts and Docker volumes. Not every application stores its active data on the NAS, and a named volume does not necessarily mean local storage.
02 / THE CONNECTIONS
Follow the flow.
- STEP 01Application state
- STEP 02Configured mount
- STEP 03Storage backend
- STEP 04Backup or recovery
03 / How it works
How it works.
A mount connects the application’s expected path to its backing storage. The useful documentation records the application, kind of data, backing layer and recovery method. Database files, uploaded documents and a backup repository can have different consistency and performance requirements even on the same storage system.
04 / Persistent data & recovery
Persistent data & recovery.
The NAS is a storage layer, not automatic proof of an independent backup. Recovery needs the data, permissions, mount configuration and any application state stored elsewhere. The Elastic design separates active index data from its NAS snapshot repository.
05 / How to check it
How to check it.
Check mount availability from the application environment, expected permissions, usable capacity and application behaviour. A healthy NAS interface cannot prove that a guest has the intended mount or that a database backup is consistent.
06 / Decisions & limits
Decisions & limits.
Shared storage simplifies access but introduces a shared dependency. Storage choices need to match the workload, and performance or availability claims should come from measurement rather than the presence of a NAS.