Local backups fail at the worst possible time — a dead hard drive, a stolen laptop, or a ransomware attack that encrypts everything on your network, including whatever’s plugged in next to it. Cloud backup services solve that single point of failure by copying your data to encrypted remote servers, so you can restore it from any device, anywhere, even if every machine in your office is compromised.
Cloud backup solutions have become essential for businesses of every size. Distributed teams, growing ransomware threats, and simple hardware failure make local-only backup risky on its own. The right cloud based backup service gives you an always-on, offsite copy of your data with none of the manual effort local backup requires.
In this guide, we compare the 10 best online backup companies for 2026, including dedicated online server backup and cloud server backup solutions for teams running physical servers, virtual machines, or NAS devices, plus which providers work well as a private cloud backup service for businesses that need control over exactly where their data lives.
Key Features of Cloud Backup Services
Before comparing individual tools, it helps to know what separates a genuine cloud backup service from ordinary cloud storage. Here are the features that matter most in 2026:
1. Automated, Continuous Backup
The best cloud backup solutions run silently in the background, backing up new or changed files automatically on a schedule or in real time — no manual uploads required.
2. Strong Encryption & Compliance
Reputable cloud based backup services use AES 256-bit encryption in transit and at rest. Many also offer zero-knowledge encryption and support compliance frameworks like GDPR, HIPAA, and SOC 2.
3. Support for Servers, NAS & Multiple Devices
Business-grade providers extend beyond a single laptop, offering online server backup, NAS support, and multi-device or unlimited-device plans for growing teams.
4. Versioned, Point-in-Time Restores
Unlike simple file sync, cloud server backup solutions keep multiple historical versions of a file, so you can roll back to a specific point before corruption, deletion, or an attack occurred.
5. Flexible Storage & Pricing
From flat-rate unlimited plans to pay-per-GB private cloud backup service options, pricing models vary widely — matching the plan to your data volume is key to avoiding overpaying.
Cloud Backup Services Compared at a Glance
A quick side-by-side comparison of all 10 providers before the full breakdowns below.
| Provider | Best For | Starting Price | Server Backup | Zero-Knowledge Encryption |
|---|---|---|---|---|
| IDrive | Best overall value | $0 – $75.90/yr | Yes | Optional |
| Backblaze | Unlimited backup, simplicity | $7/mo | Limited | Yes |
| Acronis | Anti-ransomware & server backup | $4.17 – $69.92/mo | Yes | Yes |
| MSP360 | Private cloud backup service | From $0.03/GB | Yes | Yes |
| pCloud | Free storage + backup combo | $0 – $9.99/mo | No | Add-on |
| SpiderOak | Maximum privacy | $3.58 – $29/mo | No | Yes (default) |
| Carbonite | Unlimited home backup | $6 – $83.34/mo | Add-on plans | No |
| NinjaOne | MSPs & cloud server backup | Custom quote | Yes (core focus) | Yes |
| Livedrive | Unlimited business storage | £8/mo | Business plans only | No |
| Dropbox Backup | Freelancers already on Dropbox | $11.99/mo | No | No |
Top 10 Cloud Backup Services in 2026
Now let’s look at each provider in detail — features, pricing, and the pros and cons we found in testing.
1. IDrive
Best overall cloud backup service
IDrive is one of the most complete cloud backup solutions on the market, covering computers, external drives, NAS, servers, and mobile devices under a single unlimited-device plan. For anyone comparing cloud based backup services on price-per-TB, IDrive’s flat annual pricing is hard to beat.
Its block-level incremental backup engine only uploads the parts of a file that changed, which keeps bandwidth use low even on large datasets — a real advantage when using it for cloud server backup involving databases or virtual disks.
Key features:
- Unlimited devices on one account
- Block-level incremental backup
- Physical drive shipping for large seed backups
- NAS, server, and mobile device support
- Optional private encryption key
Pros
- Excellent price-to-storage ratio
- Backs up unlimited devices per plan
- Fast, reliable restores in testing
Cons
- No true unlimited-storage plan
- No monthly billing option
2. Backblaze
Best for simple, unlimited backup
Backblaze is the simplest of all the cloud backup services here — install the client, and it backs up your entire drive with no configuration required. For flat-rate, unlimited personal cloud backup, it’s consistently one of the best online backup companies on price.
It’s less suited to online server backup: Backblaze Personal Backup is built for single computers rather than servers, though its sister product, Backblaze B2, is used by developers as raw cloud storage for custom backup solutions.
Key features:
- Truly unlimited storage per computer
- Automatic, zero-configuration backup
- Optional private encryption key
- Physical drive restore shipping option
Pros
- Genuinely unlimited storage
- Extremely easy to set up
- Transparent, flat pricing
Cons
- Recovery key must be uploaded via web, not the client
- Not built for server or NAS backup
3. Acronis Cyber Protect Home Office
Best for advanced security & server backup
Acronis blends backup with built-in cybersecurity, making it one of the strongest cloud backup solutions for anyone worried about ransomware. Its active protection engine can detect and block suspicious encryption activity in real time, then restore any files caught mid-attack.
It also genuinely doubles as an online server backup product — full disk imaging, NAS support, and hybrid local-plus-cloud backup make it a solid fit for small businesses that need cloud server backup without an enterprise contract.
Key features:
- Real-time anti-ransomware protection
- Full disk imaging & NAS/server support
- Choice of data center location
- Zero-knowledge encryption
- Hybrid local + cloud backup
Pros
- Backup and security in one tool
- Flexible data residency options
- Unlimited version history
Cons
- Interface has a learning curve
- Backup client can feel sluggish on large jobs
4. MSP360 Managed Backup (formerly CloudBerry Backup)
Best private cloud backup serviceMSP360 (the rebrand of CloudBerry Backup) is the closest thing on this list to a true private cloud backup service. Instead of storing your data on its own servers, it lets you bring your own storage target — Amazon S3, Backblaze B2, Wasabi, Azure, or a private on-prem repository — and manages the backup, encryption, and scheduling on top.
That architecture makes it a favorite for MSPs and IT teams that need cloud server backup across many client environments while keeping full control over where the underlying data physically sits.
Key features:
- Bring-your-own-storage architecture
- Client-side encryption before upload
- Block-level, multi-threaded uploads
- Centralized console for managing multiple servers
Pros
- Full control over storage location
- Very flexible for MSPs managing multiple clients
- No markup on storage costs
Cons
- Requires a separate storage account (added setup step)
- Steeper learning curve for non-technical users
5. pCloud
Best free cloud storage + backup combo
pCloud started as a cloud storage provider and later added dedicated backup features, so it now sits in a useful middle ground among cloud backup services — you get file sync, sharing, and versioned backup in the same plan.
It won’t replace a dedicated online server backup tool, but for freelancers and small teams who want cloud based backup services bundled with everyday file storage, it’s one of the more generous free tiers available.
Key features:
- 10GB free storage, expandable via referrals
- Automatic backup for desktop folders
- Built-in file sharing and sync
- Optional zero-knowledge encryption add-on
Pros
- Generous free tier
- Combines storage and backup in one app
- One-time lifetime plans available
Cons
- Zero-knowledge encryption costs extra
- Not designed for server or NAS backup
6. SpiderOak One Backup
Best for maximum privacy
SpiderOak built its reputation on “no-knowledge” encryption — even SpiderOak itself can’t read your files, since encryption keys never leave your device. Among cloud backup solutions aimed at privacy-conscious users, that’s one of the strongest guarantees available.
It combines light cloud storage with proper versioned backup and works well for hybrid teams that need secure file-sharing alongside their backups, though it comes at a higher price per GB than most alternatives.
Key features:
- Zero-knowledge encryption by default
- Unlimited version history
- Cross-device file sync and sharing
Pros
- Best-in-class privacy and security posture
- Strong download/restore speeds
Cons
- Expensive relative to storage offered
- No server or disk-image backup
7. Carbonite
Best for unlimited home backup
Carbonite (now part of OpenText) is a straightforward, no-frills pick among cloud backup services, with an unlimited-storage plan that’s easy to recommend for home users and small offices that just want an offsite copy of everything.
Business tiers add server and external-drive support, though it lags competitors on hybrid and image-based backup — if cloud server backup is your main need, Acronis or MSP360 will serve you better.
Key features:
- Unlimited storage on core plans
- Automatic continuous backup
- External drive backup on select plans
Pros
- Affordable unlimited storage tier
- Simple setup for non-technical users
Cons
- Download/restore speeds lag behind rivals
- Server backup limited to higher-tier plans
8. NinjaOne Backup
Best for MSPs & cloud server backupNinjaOne Backup is purpose-built for IT teams and managed service providers that need cloud server backup and endpoint backup managed from one console, rather than a consumer-style single-device client.
It’s overkill for a solo user backing up a laptop, but if you’re comparing cloud based server backup services for a fleet of workstations, physical servers, and Microsoft 365 data, it’s one of the few purpose-built options that scales cleanly.
Key features:
- Unified console for endpoint + server backup
- Image-based and file-level restore options
- Microsoft 365 backup coverage
- Granular retention and scheduling policies
Pros
- Purpose-built for cloud server backup at scale
- Strong reporting and centralized management
Cons
- Not designed for individual/home use
- Pricing requires a sales conversation
9. Livedrive
Best unlimited storage for businessLivedrive offers unlimited backup storage alongside cloud storage and file-sharing tools, positioning it as a middle ground between consumer tools like Backblaze and IT-focused platforms like NinjaOne.
Its Pro Suite tier adds NAS and small-server backup, making it a reasonable, budget-friendly option for UK and EU businesses that want cloud based backup services without enterprise pricing.
Key features:
- Unlimited backup storage on core plans
- Briefcase-style cloud file sharing
- NAS backup on Pro Suite plan
Pros
- Genuinely unlimited storage
- Competitive pricing for small business
Cons
- No zero-knowledge encryption option
- Server backup limited to top-tier plan
10. Dropbox Backup
Best for freelancers already on DropboxDropbox Backup extends the familiar Dropbox sync experience into full-folder computer backup, which makes it an easy add-on if you’re already paying for Dropbox for collaboration and file sharing.
It’s the least specialized entry among these cloud backup services — no server support, no zero-knowledge encryption — but for solo freelancers who want one tool for both sharing and backup, the convenience is real.
Key features:
- Whole-folder computer backup
- Familiar Dropbox sync interface
- File versioning and recovery window
Pros
- Seamless if you already use Dropbox
- Simple, familiar interface
Cons
- No server or NAS backup
- More expensive than dedicated backup-only tools
Choosing Between Cloud Backup Solutions for Servers vs. Personal Use
Not every cloud backup service is built for the same job. Here’s how to match the right category to your situation.
For personal & single-device backup
Prioritize unlimited storage and simplicity. Backblaze and Carbonite both offer flat-rate unlimited plans. IDrive is worth the slightly higher setup effort if you also want mobile and NAS coverage in the same plan.
For online server backup & cloud server backup solutions
Server backup needs image-based snapshots and support for both Windows and Linux. Acronis and NinjaOne are purpose-built for this; MSP360 is strongest if you also need control over storage location.
For a private cloud backup service
If compliance or data residency rules out shared multi-tenant storage, look for a provider that lets you bring your own storage target — MSP360 and Acronis both qualify.
For maximum privacy
If you want a provider that mathematically cannot read your files, choose a zero-knowledge default like SpiderOak One, or enable the add-on on IDrive, Acronis, or pCloud.
Frequently Asked Questions
What is a cloud backup service and how does it work?
A cloud backup service automatically copies your files, folders, or entire systems to remote servers over the internet, so your data survives a crash, theft, or ransomware attack. Most cloud backup solutions run in the background on a schedule or in real time, uploading only new or changed data once the first full backup is done.
How is cloud backup different from cloud storage like Google Drive or Dropbox?
Cloud storage syncs files for access and sharing; if you delete a file, the deletion syncs too. Cloud backup solutions keep versioned, point-in-time copies of your data specifically for recovery, so you can restore a file, folder, or full system image from before something went wrong.
Is online cloud backup secure enough for business data?
Yes, when you choose a reputable provider. Look for AES 256-bit encryption in transit and at rest, optional zero-knowledge encryption, multi-factor authentication, and compliance with standards such as GDPR, HIPAA, or SOC 2 if you handle regulated data.
Do cloud backup solutions support online server backup?
Most business-grade cloud backup solutions support online server backup for physical servers, virtual machines, and NAS devices. Providers such as Acronis, MSP360, and NinjaOne let you schedule automated cloud server backup and restore individual files or full server images remotely.
What is a private cloud backup service and who needs one?
A private cloud backup service stores your data in infrastructure that isn’t shared with other customers’ data at the storage layer, or lets you bring your own storage target, such as a private S3 bucket or on-prem repository. It suits businesses with strict compliance, data residency, or client-confidentiality requirements.
How much storage do I need from a cloud backup service?
For a small business backing up workstations and documents, 1 to 5 TB is usually enough. If you’re doing cloud server backup or backing up databases, media libraries, or virtual machines, plan for unlimited storage or significantly more, since versioned copies add up quickly.
How long does the first backup take?
The initial “seed” backup can take hours to several days depending on data size and upload speed. After that, cloud backup services switch to incremental backups, uploading only changed data, which is much faster. Some providers offer physical drive seeding to speed up the first backup.
Can I restore files from anywhere with cloud backup?
Yes. As long as you have internet access and your account credentials, you can log in and restore individual files, folders, or full system images from any device and location, which is one of the main advantages of cloud based backup services over local-only backup.