NAS for backup and archive: do’s and don’ts

Last updated: July 2026

A NAS is often used for shared storage, backups, or archive data. For home use or small environments, this can work perfectly fine. For organizations, however, things are different.

Professional backup and archiving isn’t just about storage capacity. You also need to consider recoverability, rebuild times, ransomware protection, data growth, management, and whether data remains reliably available after an incident.

That’s why the question isn’t just whether a NAS offers enough space. The better question is: does a NAS fit the role that this data plays within your backup, archive, or disaster recovery strategy?

What is a NAS?

NAS stands for Network Attached Storage. It is storage available over the network for users, applications, or systems. A NAS is often used for shared files, simple backups, project data, or archive folders.

The advantage of a NAS is clear. You create central storage that is relatively easy to access. Users can save, share, and retrieve files without data remaining locally on individual workstations.

For small environments, that may be sufficient. For organizations with critical data, it becomes more challenging. In those cases, you must look beyond storage space and consider security, availability, recoverability, and management.

NAS vs SAN: what is the difference?

A NAS functions as file storage over the network. Users and applications access files via protocols such as SMB or NFS. This makes a NAS convenient for shared folders and central file storage.

A SAN works differently. A SAN provides block-level storage and is often used for servers, databases, and environments where performance and central storage are vital. SAN environments are typically more complex but offer more control over performance and availability.

For simple file storage, a NAS can be a logical choice. For critical business processes, backup, archive, and recovery, you need to take a closer look at the role storage plays within the entire IT architecture.

When is a NAS suitable?

A NAS can be suitable for situations where data needs to be easily shared and is not directly mission-critical. Think of project files, simple file sharing, temporary storage, or small backup environments.

A NAS can also be useful when you want to quickly add central storage without setting up a full storage environment. The entry point is often low and management is straightforward.

However, that doesn’t mean a NAS is automatically suitable for every form of data storage. As soon as data becomes important for continuity, compliance, or recovery after ransomware, you must set stricter requirements.

The risks of a cheap NAS for professional use

A cheap NAS seems attractive at first glance. You get a lot of storage capacity for a relatively low price. In practice, the risks often lie in performance, rebuild times, redundancy, management, and recoverability.

With large drives, a rebuild can take a long time. During such a rebuild, the environment is more vulnerable. If another drive fails, it can lead to data loss or extended downtime.

Ransomware also poses a risk. If a NAS is continuously accessible via the network, malware can, in some situations, also encrypt or delete files on the NAS. Especially when permissions management, segmentation, and backup policies are not properly configured.

Therefore, you should never judge a NAS on capacity alone. Also look at retention, access management, monitoring, recovery testing, and whether data remains protected when the production environment is hit.

NAS as secondary storage

A NAS is sometimes deployed as secondary storage. By this, we mean storage for data that doesn’t need to be on primary systems continuously but must remain available.

Think of older project data, export files, simple archive folders, or temporary backup copies. For these types of applications, a NAS can play a role, as long as the risks are well covered.

Professional secondary storage often has higher requirements. Backups must be recoverable. Archive data must remain reliable and findable. Critical data must be protected against modification, deletion, and ransomware. And with growing datasets, costs and management must remain predictable.

That’s why secondary storage is more than just a place where you put data. It is a deliberate storage layer within your backup, archive, and recovery strategy.

When should you choose professional backup storage?

A NAS can be suitable for simple storage, but it becomes vulnerable when it takes on a central role in backup, archive, or recovery after ransomware.

Professional backup storage involves different requirements. Think of immutability, air gap, fast recovery, monitoring, clear retention, and integration with backup software like Veeam. You also need to know how long recovery takes when multiple drives fail or when an entire environment needs to be restored.

For organizations, a NAS is therefore not always the best place for critical backups or archive data. Especially not when downtime, compliance, or data loss has a direct impact on business operations.

A good backup strategy isn’t just about making copies. It’s primarily about whether you can restore data securely, verifiably, and quickly enough when needed.

Silent Bricks and Silent Cubes as an alternative

For home use or simple file storage, a NAS can be a logical choice. For professional backup, archive, and disaster recovery, more is needed than just storage capacity.

Silent Bricks and Silent Cubes offer more control, security, and flexibility for organizations that want to store data long-term or need to be able to recover quickly.

Silent Bricks is particularly suited for backup, recovery, VTL, and air gap storage. The solution helps organizations store backups securely and keep them recoverable in the event of ransomware, human error, or technical incidents.

Silent Cubes was developed for compliant archiving and WORM storage. This allows organizations to store data long-term, unalterably, and in an audit-proof manner.

The right choice depends on the role of your data. Data that needs to be quickly recoverable requires a different solution than data that must be kept unalterable for years.