#6 Best Cloud Backup Synology NAS (Reviewed)

Did you know that 30% of computer users have experienced data loss at some point?

Today, data is arguably your most valuable asset, and with ransomware attacks becoming an ever-present threat , a robust backup strategy is no longer optional—it’s essential.

If you rely on a Synology NAS device as your central storage hub, choosing the right cloud backup solution can be the difference between peace of mind and a digital disaster.  

To help you navigate the myriad of options available, we conducted extensive research, evaluating the top cloud backup solutions for Synology NAS devices based on the following criteria:

1. We identified the leading cloud backup solutions available for Synology NAS devices.
2. We shortlisted the 6 best options that are most relevant in 2025.
3. For each option, we evaluated their features, pricing, ease of use, security, and customer reviews.

This in-depth analysis has culminated in this comprehensive blog post, designed to help you make an informed decision and choose the best cloud backup solution for your needs.

Why bother with cloud backup for your Synology NAS? Here are a few compelling reasons:

• Protection against data loss: Hardware can fail, disasters can strike, and ransomware attacks are an ever-present threat. Cloud backup provides an off-site copy of your data, ensuring you can recover from any eventuality.  
• Accessibility from anywhere: Access your backed-up files from any device with an internet connection, providing unparalleled convenience and flexibility.  
• Enhanced security: Cloud providers employ robust security measures, including encryption and access controls, to safeguard your data from unauthorized access.  
• Automated backups: Schedule backups in advance and let the system take care of the rest, ensuring your data is consistently protected without lifting a finger.  
• Scalability: As your data grows, so can your cloud storage, eliminating the need to invest in additional hardware.  

With that said, let’s dive into the top 6 cloud backup solutions for your Synology NAS in 2025:

1. Backblaze B2

Backblaze has earned a stellar reputation for its user-friendly interface and competitive pricing.

It offers unlimited storage for computer backups and a pay-as-you-go model for its B2 Cloud Storage service, which seamlessly integrates with Synology NAS devices, making it a top choice for both individuals and businesses.  

Features:

• Unlimited storage capacity for computer backups  
• Continuous backups for real-time protection  
• Automatic video and document backup  
• Native integration with Synology Hyper Backup and Cloud Sync  
• Server-side encryption  
• Two-factor authentication  
• File versioning (30 days by default, with options to extend)  
• Cross-origin resource sharing (CORS)  
• Multi-region data replication  
• Object Lock immutability for ransomware protection  

Pricing:

Backblaze offers a straightforward pricing structure with no hidden fees. Its personal backup plan costs $7/month or $70/year for unlimited storage on a single computer. For businesses, the cost is $7/month or $70/year per computer.  

For consistent CapEx needs, Backblaze also offers B2 Reserve, a pricing option with volume and term discounts.  

Ease of Use:

Backblaze is designed with simplicity in mind. Its native software ensures seamless integration with your Synology NAS, and the setup process is quick and easy. Backblaze improves team efficiency by simplifying setup and reducing data management time. The web interface is clean and intuitive, allowing you to manage your backups effortlessly.  

Security:

Backblaze takes data security seriously. It employs strong encryption, both in transit and at rest, to protect your files from unauthorized access. You can also opt for a private encryption key, giving you complete control over your data.  

Customer Reviews:

Backblaze consistently receives high praise from users for its ease of use, reliability, and affordability. Many reviewers highlight its seamless integration with Synology NAS devices and its excellent customer support.  

Key Insight:

Backblaze stands out by offering unlimited storage for computer backups at a fixed price, a significant advantage over providers that charge per GB. This makes it an incredibly cost-effective solution for individuals and businesses with large amounts of data to protect.  

2. Synology C2 Backup

As Synology’s official cloud backup service, C2 Backup offers seamless integration with your NAS device. It provides a secure and reliable way to protect your data, with a focus on simplicity and affordability.  

Features:

• End-to-end encryption for data security  
• Incremental backups for efficient storage use  
• User-friendly interface  
• Full-system backup  
• External drive backup  
• Flexible retention policies  
• Bare-metal recovery  
• File-level recovery  
• Integration with Microsoft OneDrive  
• Active Insight for centralized system monitoring  
• Minimum requirements for Entire System backup: DSM 7.2 and Hyper Backup 4.1.0  

Pricing:

Synology C2 Backup offers various plans to suit different needs. Individual plans start at $9.99/year for 100GB of storage. Business plans start at $499.95/year for 5TB of storage and support for up to 250 users.  

Ease of Use:

C2 Backup is designed to be incredibly easy to use, especially for those already familiar with Synology’s DSM interface. The setup process is straightforward, and the web portal provides a clear overview of your backups and settings.  

Security:

Synology C2 Backup prioritizes data security with end-to-end encryption and a private key that never leaves your device. This ensures that only you can access your backed-up data.  

Customer Reviews:

Users generally appreciate C2 Backup’s seamless integration with Synology NAS devices and its user-friendly interface. Some reviewers find the feature set a bit limited compared to other cloud backup solutions, but it excels in simplicity and affordability.  

Key Insight:

One of the biggest advantages of Synology C2 Backup is that Synology is your single point of contact for both your NAS device and your cloud backup solution. This can simplify support and troubleshooting, as you don’t have to deal with multiple vendors.  

3. Amazon S3

Amazon S3 is a highly scalable and reliable cloud storage service that’s widely used by businesses of all sizes. While it requires a bit more technical expertise to set up, it offers a cost-effective solution for large-scale data backup.  

Features:

• Integration with other AWS services  
• Secure data transfer and storage  
• Flexible storage plans  
• S3 Object Tagging for data management  
• S3 CloudWatch Metrics for monitoring  
• S3 CloudTrail Integration for auditing  
• Server-side encryption with multiple key management options  
• Access management controls  
• Cross-region replication  
• Object Lock immutability  
• S3 Glacier Instant Retrieval and S3 Glacier Flexible Retrieval storage classes for infrequent and archival data access  
• Seamless integration with various backup and archival software  

Pricing:

Amazon S3 offers a pay-as-you-go pricing model, where you only pay for the storage you use. Prices vary depending on the storage class, retrieval frequency, and data transfer.  

Ease of Use:

While Amazon S3 provides a simple web service interface, it can be more complex to set up compared to other cloud backup solutions. However, it offers extensive documentation and support resources to guide you through the process.  

Security:

Amazon S3 prioritizes data security with encryption features and access management tools. It supports various encryption options, including server-side encryption and client-side encryption.  

Customer Reviews:

Amazon S3 is widely regarded as a reliable and scalable cloud storage service. Users appreciate its versatility, performance, and cost-effectiveness. However, some reviewers find the pricing structure complex and the interface less user-friendly compared to other solutions.  

Key Insight:

Amazon S3’s integration with other AWS services can be a major advantage for businesses already using the AWS ecosystem. This allows for seamless workflows and centralized management of your cloud infrastructure.  

4. Google Drive

Google Drive is a popular cloud storage service that’s known for its ease of use and integration with Google Workspace.

It’s an excellent option for Synology NAS if you’re already using Google services and need a simple and accessible backup solution.  

Features:

• Seamless integration with Google Workspace  
• Real-time cloud content collaboration  
• Comprehensive search functionality  
• Generous free storage tier (15GB)  
• AI-powered search  
• Document scanning  
• Shared drives for team collaboration  
• New homepage view with better sorting, filtering, and viewing options  
• Preview feature for quick actions like renaming, sharing, moving, and downloading files  

Pricing:

Google Drive offers a free tier with 15GB of storage. Paid plans start at $1.99/month for 100GB. Business plans are available as part of Google Workspace, starting at $6/user/month.  

Ease of Use:

Google Drive is known for its user-friendly interface and intuitive design. It’s easy to upload, organize, and share files, and the integration with other Google services is seamless.  

Security:

Google Drive protects your data with encryption in transit and at rest. It also offers security features like two-factor authentication and spam filtering.  

Customer Reviews:

Google Drive receives positive reviews for its ease of use, collaboration features, and integration with other Google services. However, some users find the storage limitations of the free tier restrictive and the pricing of higher tiers less competitive.  

Key Insight:

Google Drive’s AI-powered search can be a real time-saver. It intelligently surfaces relevant results based on your activities, making it easier to find the files you need, even if you can’t remember their exact names or locations.  

5. pCloud

pCloud is a secure and reliable cloud storage service that offers a good balance of features and affordability. It’s a solid option for Synology NAS users who need a user-friendly platform with strong security measures.  

Features:

• Store and organize files and documents securely in the cloud  
• Easy file and folder sharing  
• Automatic photo and video backup  
• Strong encryption and data protection  
• Unlimited file size  
• Unlimited upload and download speed  
• pCloud Drive for virtual drive access  
• pCloud Crypto for client-side encryption  
• pCloud Save for saving photos directly from your browser  

Pricing:

pCloud offers a free tier with up to 10GB of storage. Paid plans start at $4.99/month for 500GB. Lifetime plans are also available for a one-time payment.  

Ease of Use:

pCloud is designed to be user-friendly, with an intuitive interface and easy-to-use features. The pCloud Drive desktop application provides a seamless way to access and sync your files.  

Security:

pCloud prioritizes data security with TLS/SSL encryption and data storage in secure data centers. With pCloud, your files are stored on at least three server locations in a highly secure data storage area. It also offers optional pCloud Crypto for client-side encryption, giving you complete control over your data.  

Customer Reviews:

pCloud receives positive reviews for its ease of use, security features, and competitive pricing. Users appreciate its lifetime plan options and its focus on data protection. However, some reviewers find the customer support less responsive compared to other cloud storage providers.  

Key Insight:

pCloud’s “pCloud Rewind” feature is a unique advantage that sets it apart from many competitors. It allows you to recover files from a previous date, providing an extra layer of protection against accidental deletion or data corruption.  

6. Wasabi

Wasabi is a cost-effective and high-performance cloud storage service that’s gaining popularity as an alternative to Amazon S3. It offers similar features and functionality, but at a significantly lower price.  

Features:

• Cost-effective storage  
• High-speed data access  
• Strong data security  
• Easy scalability  
• No fees for egress or API requests  
• Immutable buckets for ransomware protection  
• Multi-factor authentication  
• Multi-user authentication  
• Compliance with various industry standards (HIPAA, CJIS, FERPA, GDPR)  
• Account Control Manager (WACM) for managing users and permissions  

Pricing:

Wasabi’s pricing is straightforward and predictable, with no egress fees or API request charges. It costs $5.99/TB/month for its hot cloud storage.  

Ease of Use:

Wasabi offers a user-friendly interface and integrates with various S3-compatible applications. It’s relatively easy to set up and manage, even for those with limited technical expertise.  

Security:

Wasabi prioritizes data security with encryption in transit and at rest, as well as features like multi-factor authentication and object lock. Wasabi recommends rotating root and sub-user access/secret key pairs regularly to enhance security. It also complies with various industry standards, including HIPAA and GDPR.  

Customer Reviews:

Wasabi receives positive reviews for its competitive pricing, performance, and security features. Users appreciate its straightforward pricing model and its compatibility with various applications. However, some reviewers find the customer support less comprehensive compared to larger cloud providers.  

Key Insight:

Wasabi’s lack of egress fees can result in significant cost savings, especially for businesses with high data transfer needs. This predictable pricing model makes it easier to budget for cloud storage costs.

Read also: #6 Best Cloud Backup Services for Photographers 

Ransomware Protection: A Critical Consideration

Ransomware attacks are a growing threat to businesses and individuals alike.

These attacks can encrypt your valuable data, holding it hostage until you pay a ransom.

Choosing a cloud backup solution for Synology NAs with robust ransomware protection features is crucial to mitigating this risk.

Several providers in this list offer features specifically designed to combat ransomware:

• Backblaze B2: Object Lock immutability prevents files from being modified or deleted, even by attackers who gain access to your account.  
• Amazon S3: Object Lock provides similar immutability, ensuring your backups remain safe from ransomware encryption.  
• Wasabi: Immutable buckets offer the same level of protection, preventing attackers from altering or deleting your backed-up data.  
• Synology C2 Backup: Synology C2 Backup also offers robust security features, including end-to-end encryption and a private key that never leaves your device, which can help protect against ransomware attacks.  

When evaluating cloud backup solutions, prioritize those that offer these ransomware protection features to ensure your data remains safe and recoverable in the event of an attack.

Final Thoughts

Choosing the best cloud backup solution for your Synology NAS depends on your specific needs and priorities. Consider factors like storage capacity, pricing, ease of use, security features, and customer support when making your decision.

Here’s a table summarizing the key features of each provider:

Recommendations for Different User Profiles

To further assist you in your decision-making process, here are some tailored recommendations based on different user profiles:

• Home users: If you’re primarily concerned with backing up personal files and photos, Backblaze B2 offers an excellent combination of ease of use, affordability, and unlimited storage for computer backups. Google Drive is another strong contender with its generous free tier and seamless integration with other Google services.
• Small businesses: Synology C2 Backup is a compelling option for small businesses due to its seamless integration with Synology NAS devices, strong security features, and affordable pricing. pCloud is also worth considering for its user-friendly interface and lifetime plan options.
• Large enterprises: Amazon S3 is a robust and scalable solution that’s well-suited for large enterprises with high storage and performance demands. Wasabi is a strong alternative that offers similar features at a lower cost.

Ultimately, the best cloud backup solution for your Synology NAS is the one that best meets your specific needs and budget. Carefully evaluate the features, pricing, and customer reviews of each provider to make an informed decision.

Read also:

• Latest Cloud Backup Costs
• Cloud Backup vs. External Hard Drive
• Cloud Backup vs. Local Backup
• #5 Best Cloud Backup for Multiple Computers