85% of companies expect spending on unstructured data storage to increase in 2026, according to Komprise research. This is forcing businesses to reconsider traditional models, as monthly subscription payments for public clouds grow together with the volume of information. In this guide from COSMONOVA, a provider of secure data centers in Kyiv and Europe, we will examine the alternatives to cloud-based data storage and how to choose the optimal architecture.

Cost has become the main concern for businesses using public clouds, overtaking security concerns, according to the 2026 StorageReview report. The paradox is that the global cloud technology market continues to grow by more than 21% annually, while businesses are looking for ways to consolidate and control their data.

Alternatives to cloud storage are architectures where you control the physical storage media or rent dedicated infrastructure instead of paying for gigabytes through a subscription. The key drivers for switching are total cost of ownership and data confidentiality requirements.

Comparing Alternatives to Cloud Storage Solutions

A local server, network-attached storage (NAS), and hybrid models are the three main approaches, each offering a different balance of control, cost, and complexity. Before making a choice, assess data criticality, budget, and the capabilities of your IT team.

IDC statistics show sustained 10.9% growth in demand for servers and enterprise storage systems, confirming the continued relevance of physical infrastructure. At the same time, 60% of infrastructure leaders planned to adopt hybrid cloud environments by 2026, up from 20% in 2023.

NAS as an Alternative to the Cloud: Benefits of NAS for Business

Network-attached storage (NAS) is a specialized computer with drive bays that connects to a local network and provides file access through SMB, NFS, or AFP protocols. Unlike a public cloud, NAS remains physically located in your office or in a rented data center, giving you full control over storage media and data.

The benefits of NAS for business are clear: no monthly storage fees, full physical control over storage media, automated backups, and high local network access speeds of up to 10 Gbps. However, these advantages come with an entry barrier: NAS is essentially a mini-server that requires basic administration skills.

A server rack with several NAS devices, neatly connected with cables, in a clean server room with cool lighting.

What You Need to Know Before Buying: Architecture and Resilience

Before choosing a model, understand its basic components. A NAS consists of a chassis, a motherboard with a processor (ARM for budget models or Intel Celeron/Xeon for higher-performance models), RAM, and drive bays. The key parameter is the number of bays: 2-bay models are suitable for small businesses, but RAID 5 or RAID 6 requires at least 3–4 bays.

RAID is not a backup; it is a mechanism for protecting against drive failure. RAID 1 requires two drives and can withstand the failure of one. RAID 5 requires at least three drives and can withstand one drive failure. RAID 6 requires at least four drives and can withstand two drive failures. For critical data, choose RAID 6 or RAID 10, especially with high-capacity drives (8–16 TB), where RAID 5 rebuilds can take several days and increase the risk of a second drive failure.

Synology DiskStation: An Ecosystem for Small and Medium-Sized Businesses

Synology DiskStation is a strong option for small and medium-sized businesses. The DSM operating system offers an intuitive interface, automated backups through Hyper Backup, and RAID support. Prices start at around UAH 8,000 for a diskless model, while adding two 4 TB drives brings the total budget to approximately UAH 15,000.

DSM includes Synology Drive, an alternative to Dropbox that provides file synchronization, versioning, and link-based sharing. For teams of up to 20 people, this can replace a basic cloud-service subscription. With cloud storage costing UAH 300–500 per month per 1 TB, a NAS can pay for itself in 2–3 years.

QNAP NAS: Enterprise Features and Deployment Complexity

QNAP is aimed at enterprise users and IT departments. It supports virtualization and containerization (Docker, LXC), volume-level data encryption, and Active Directory integration. Transfer speeds can reach 10GbE on supported models. Prices range from around UAH 9,500 for basic models to more than UAH 50,000 for models with 4–8 bays and 10GbE.

The downside is configuration complexity for inexperienced users. QNAP uses QTS or QuTS hero for ZFS, offering hundreds of configuration options, from storage pools to snapshots and replication. Without Linux or Windows Server administration experience, you risk exposing data to the entire local network. It is recommended to involve a system administrator for the initial setup.

Western Digital My Cloud and TerraMaster NAS: Budget Segment and Its Limitations

Western Digital My Cloud is a simple plug-and-play solution for home users and small teams, offering remote access through a mobile application, photo synchronization, and DLNA support. Prices start at around UAH 6,000. However, the platform has limited capabilities: no snapshots, limited RAID support, and less frequent software updates than Synology or QNAP. Public vulnerabilities affecting My Cloud were reported in 2023–2024.

TerraMaster is a budget option starting at around UAH 5,500, with support for SMB, NFS, FTP, snapshots, and the Btrfs file system. The TOS 6 operating system has become more stable, but its third-party application ecosystem is significantly smaller than Synology's, with no ready-made packages for Nextcloud or OnlyOffice.

Attention. Do not choose a NAS based on price alone. For critical data, you will need a model supporting RAID 5 or RAID 6, which means at least three to four drives and a suitable controller, increasing the budget by 1.5–2 times. Saving on resilience can result in data loss when a drive fails. Also consider the cost of NAS-class drives such as Western Digital Red Plus and Seagate IronWolf. They are 20–30% more expensive than standard drives but are designed for 24/7 operation and vibration.

The entry threshold for NAS is higher than it appears. In addition to the device itself, budget for drives, configuration, and annual maintenance. If your team does not have someone with basic administration skills, consider a one-time setup service or an alternative such as a managed dedicated server, where the provider handles maintenance.

Data Security on Local Servers: Myths and Reality

A common misconception is that local storage is automatically more secure than the cloud. The reality is more complex: data security on local servers depends on the infrastructure rather than simply where the data is hosted.

A local server requires its own cybersecurity measures: two-factor authentication, data encryption, version control, and regular backups. The popularity of self-hosted solutions such as OwnCloud, Seafile, and Ceph is growing because they provide greater control over data. However, that control also creates responsibility: disaster recovery, physical server-room security, and monitoring become your tasks.

A cloud provider operating a certified data center can often provide a higher level of physical security than an office server room. The key question is who controls the encryption keys and who has legal access to the data.

Hybrid Data Storage Strategy: Balancing Control and Scalability

A hybrid data storage strategy combines local infrastructure for sensitive data with cloud services for scalable workloads. This approach reduces the risks associated with data fragmentation: the more unrelated cloud services a business uses, the harder it becomes to manage information.

In practice, a hybrid model works as follows: a NAS or dedicated server stores working documents and databases, while the cloud is used for archiving, testing, or peak workloads. By 2028, adoption of Storage as a Service (STaaS) could reduce capital expenditure by up to 35%.

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For media companies and television broadcasters that require video processing and content delivery, hybrid architecture is particularly relevant: source materials are stored locally, while finished content is distributed through a CDN.

Selection Criteria: Total Cost of Ownership, Complexity and Jurisdiction

When comparing alternatives to cloud storage, consider not only subscription costs but also the total cost of ownership (TCO) over 3–5 years. Most reviews simply state that "NAS pays for itself," but without specific calculations this is not particularly useful. Consider a business with 5 TB of data and a team of 15 people.

TCO Calculation: NAS vs. Cloud Subscription Over 5 Years

Scenario A: Public cloud. The cost is approximately UAH 300–400 per user per month. For 15 users, this means UAH 4,500–6,000 per month, or UAH 54,000–72,000 per year. Over five years, this amounts to UAH 270,000–360,000.

Scenario B: Four-bay NAS. The device costs approximately UAH 25,000. Four Western Digital Red Plus 8 TB drives cost around UAH 12,000 each, for a total of UAH 48,000. Total hardware cost is UAH 73,000. Setup costs UAH 5,000–8,000. Annual maintenance costs UAH 3,000–5,000. Over five years, the total is approximately UAH 100,000.

Scenario C: Hybrid model (NAS + cloud archive). A 5 TB NAS costs approximately UAH 20,000. Cloud storage for cold archives costs UAH 300–500 per month for 5 TB. Over five years, the total is UAH 38,000–50,000. This is the most economical option, but it requires automated archiving policies to be configured.

The key formula is simple: if your data volume grows by less than 20% per year and your team has fewer than 50 people, a NAS or hybrid model will almost always have a lower TCO over a 3–5 year period. If data growth is exponential (100%+ annually), the cloud's instant scalability may be cheaper than continuously purchasing new drives and enclosures.

Data Jurisdiction and Legal Considerations for Ukrainian Businesses

Data jurisdiction is a critical factor that is rarely discussed in competing articles. Businesses handling personal data of Ukrainian citizens are subject to Ukraine's Law "On Personal Data Protection" No. 2297-VI.

For businesses with customers in the European Union, GDPR applies. Articles 44–49 of GDPR regulate transfers of data outside the EU. If you store data in a Ukrainian data center while your customers are located in the EU, transferring that data to Ukraine is considered a transfer to a "third country." Ukraine currently does not have an EU adequacy decision, so additional safeguards may be required.

Data stored in data centers located in Ukraine or Europe is subject to local data protection laws, which can simplify compliance for local businesses. International cloud providers process data across multiple jurisdictions, and the exact physical location of your data may change.

Setup and Maintenance Complexity: The Real Entry Barrier

Assess the complexity of setup and maintenance. NAS requires a qualified administrator, access-control configuration, monitoring, and updates. If your team is already overloaded, managed infrastructure may be more efficient.

Practical checklist for assessing your team's readiness:

1. Do you have an administrator familiar with network protocols such as SMB, NFS, and iSCSI? If not, budget for training or outsourcing.
2. Who will monitor drive health and update firmware? NAS requires regular SMART-status checks and security updates.
3. How will you back up the NAS? If the NAS is the only copy of your data, that is not protection. You need either a second NAS in another location or a cloud backup.
4. Do you have a disaster recovery plan (DRP)? For NAS, this means regularly testing recovery from backups.

If these questions are difficult to answer, consider renting a managed dedicated server from a Ukrainian provider. The provider handles updates, monitoring, and basic administration, while you retain physical control over your data without having to employ your own administrator.

Which Cloud Alternative Should Your Business Choose?

The choice depends on scale, data criticality, and team expertise. For small businesses with up to 20 people, TerraMaster or Western Digital My Cloud with automated backups. For medium-sized businesses, Synology DiskStation or QNAP with RAID and Active Directory. For large companies, dedicated servers in a certified data center.

If your team is not prepared to maintain its own infrastructure, consider managed dedicated servers. COSMONOVA provides uninterrupted server operation in data centers in Kyiv and Europe, secure connectivity, and comprehensive solutions for television broadcasting and video processing. We handle administration, monitoring, and security.

Choosing between NAS, a local server, and the cloud is a balance between control, cost, and convenience. For sensitive data and long-term savings, local infrastructure can provide significant advantages. For scalability and mobility, the cloud is suitable. A hybrid model combines the strengths of both approaches. COSMONOVA can help design a storage architecture ranging from NAS configuration to renting secure servers in European data centers.

Frequently Asked Questions

What is NAS and why is it considered a major alternative to cloud storage?

NAS (network-attached storage) is a compact server for storing data on a local network that connects to the internet for remote access. Unlike a public cloud, you purchase the equipment once and retain full control over the storage media. For businesses, this means no recurring storage-volume fees, the ability to work without internet access, and alignment with internal security policies. Modern Synology and QNAP models offer features comparable to cloud services, including synchronization, backup, and file sharing.

What are the main risks of storing data exclusively in public clouds?

The main risks are loss of control and rising costs. A cloud provider may change pricing terms, restrict access, or disclose data in response to requests from foreign regulators. Fragmenting data across different services makes content management more difficult and increases costs. Subscription costs can also rise unpredictably as the business scales.

How can businesses secure data when using local servers?

Local storage security depends on three factors: physical protection, encryption, and backups. Place the server in a restricted-access room or a secure data center such as COSMONOVA. Use disk encryption, configure two-factor authentication and employee access rights. Regularly create backups using the 3-2-1 rule: three copies of data on two types of media, with one copy stored outside the office.

Should a business switch to a hybrid data storage model?

A hybrid model can be suitable for many medium-sized and large businesses. It combines local storage for operational data with the cloud for archiving or peak workloads. This approach reduces dependence on a single provider and helps optimize costs. Start by identifying which data requires immediate access and which data can be moved to the cloud for long-term storage.

What legal data-storage requirements should businesses consider?

Ukrainian businesses should consider the requirements of the Law "On Personal Data Protection" and rules governing cross-border data transfers. Storing customer data on servers in other jurisdictions can create additional legal risks. Using local servers or data centers in Ukraine and Europe provides greater control over data location. Before choosing a solution, consult a legal professional about which types of data can be stored outside the country.