By Ivy / Last Updated September 14, 2020


CBackupper - Easy Online Cloud Backup Solution

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What is cloud storage?

If you have dozens of files (eg: from single documents to videos, even for games) on your computer, you may know the importance of having enough space. This is beyond physical disks, but unlimited cloud storage plans can help you. In a simple word, cloud storage is a great alternative to physical disk.

With cloud storage, your data is stored on a remote server and protected from local and natural disaster, such as, system crash, hardware issue, virus, fire, thieves, and more. Also, the cloud storage is full controlled by service provider, so you don’t need to worry about data security and have time to do more meaningful things. Besides, you can access the files on cloud storage anytime, anywhere.

Cloud storage types: traditional vs cloud sync vs cloud backup

Traditional cloud storage: This type of storage solution is used to keep virtually any type of file safe, and you can consider it as a cloud-based hard drive. Also, its provider allows users to access files from any device via providing desktop or phone apps and APIs.

Cloud sync: This is probably the simplest cloud storage and help users sync individual files when any changes are made, such as, photos, contacts, calendar data etc. And it’s highly suggested to make multiple copies of your important files, because you may delete then by mistake.

Cloud backup: Unlike cloud sync, cloud backup is always automatic and you don’t need to select files manually. And it will backup the entire device and save it to a remote server.

Essential features in the unlimited cloud storage options

Truly unlimited cloud storage space: When you search “best unlimited cloud storage”, “free unlimited cloud storage”, or “unlimited cloud storage”, you just want to get unlimited cloud storage. Please check the details and fine print of your preferred plan, you will get some useful warning messages, including file size limit while uploading, bandwidth limitations, etc.

Faster transfer speed: Almost all cloud storage requires a good internet connection, including local internet speed, provider’s features, and this determines how much time you will spend. A service use solid-state hard drives and up-to-date server will greatly accelerate internet connection speed. Besides, speed-focused feature like block-level transfer is also help, because it only backup the changed parts of files.

Security issue: This is another noteworthy feature for users who want to use unlimited cloud backup rather than physical storage. To prevent unwanted access, cyberattacks, or risk of data loss, you need to see if the provider has advanced security protocols, for example, zero-knowledge encryption, 256-bit AES (TLS/SSL) encryption, end-to-end encryption, two-factor authentication and the ability to remove login information remotely, etc.

Apps and accessibility: Flexible access is the key feature of most cloud storage services. But not all of them provide desktop apps for Mac, Windows, Linux or mobile apps for all iOS and Android. You need to check before using any cloud-based software.

Unlimited cloud storage comparison: which is best free?


Key features:

Highest level of encryption

Annual and lifetime service packages

Up to 2TB storage

Unlimited remote upload traffic with URL only

Flexible file sharing

Download link branding

Pcloud Icon

pCloud is suitable for individual, business and enterprise. It has business plan and family plan for different users. And it claims security is their top priority and they certainly do this- use 256-bit AES encryption and store the uploaded files on at least 3 servers. Also, it’s one of few cloud service that offer both annual and lifetime service packages, which can save your money. Besides, its download link branding is also useful, which can help you customize your links containing meta descriptions, title tags and others information, and users who download this link will see your brand.

It looks amazing, but it does have some disadvantages, such as, no unlimited storage, no collaboration tools for file editing, paid add-on for private encryption, 500GB download link traffic for Premium package and 2TB for the Plus package.

Dropbox Business

Key Features:

Two unlimited business plans available

Block-level transfer

Smart Sync feature

Dropbox Showcase

Strong security

Remote device wipe

User-friendly apps and browser API

Flexible collaboration features


Dropbox For Business Logo

Dropbox is a traditional cloud storage and lets you save documents, videos and other type of files. At the same time, it has a smart sync feature called “Selective Sync”, which can sync the selected files and leave the unselected files in sync folder. Also, it offers you two unlimited cloud storage plans by combining several services into one, including Advance ($20/month) and Enterprise. Besides, it still has block-level transfer technology for higher speed, strong security features like 256-bit AES encryption at rest, 128-bit in-transit encryption, two-factor authentication, remote device wipe.

Meanwhile, it’s expandable if you don’t want to pay for unlimited plan. You can complete the “Getting Started Wizard” for 250MB, turn on automatic photo upload feature on mobile apps to get 3GB free space, invite friends to join and each referral is 500MB and up to 16GB, join Dropbox forum and each “Mighty Answer” is 1GB.

Through it’s an excellent choice, it does have some flaws, such as, no zero-knowledge, no 24/7 live support, limited reporting features etc.


Key Features:

Pay-as-you-go pricing

Free plan available (750 hours and 5GB storage)


Multi-factor authentication

TLS encryption

Block-level transfer

Amazon Prime

Unlimited cloud storage Amazon (AWS) is an ideal option for users who only want to pay only the used space. Also, it’s a decent choice for Amazon Prime member. It takes security seriously by providing TLS encryption and multi-factor authentication. Compared with other cloud storage, it gives user greater control via using customer-controlled encryption in the server. Besides, it still uses “incremental sync” or “delta sync” to update the changed files, which save your time.

However, since 2017, Amazon does not provide unlimited unlimited plan and the annual plan is up to 30TB. Meanwhile, Amazon prime member has 5GB free space for Amazon Drive and unlimited photo storage with Prime photos.


Key Features:

Multiple unlimited plans with storage and bandwidth

No file size limits

Flexible encryption options

Reseller plans available

Auto sync and backup feature on every paid plan

Easy-to-use collaboration system

Opendrive Main Page

OpenDrive offer multiple unlimited storage and bandwidth plans for different users, $9.95/month/user for personal unlimited plan, $29.95/month/user for business plan, $59.95/month/user for reseller plan. The personal plan can be shared with four different users and the primary account has the ability to grant file-sharing access. In addition, the business plan come with custom branding and account management while the reseller plan allows you to customize the created resources and sell storage package for others.

At the same time, it’s also an easy-to-use collaboration system that allows you to embed and encrypt photos, videos, and audio files individually. Plus, you can create the project and task lists, then leave comments and sub comments on files. Meanwhile, it’s more controllable by providing user private encryption.

It’s a good choice whether you are looking for a personal unlimited plan, business or reseller. However, there are something you need to pay attention, such as, the upload speed is quite slow, its web app is not intuitive as other services, no two-factor authentication, etc.


Key Features:

Three unlimited plans

Selective Sync

Strong encryption techniques

Collaborate on files

HIPAA/HITECH compliance

24/7 support

Box Icon

Box is a very business-focused cloud storage that offer business users three unlimited plan, including Business, Business Plus, Enterprise. Thanks to “Selective Sync” feature, you can choose which files or folders to sync and its upload speed is relatively fast. Also, it has enterprise-grade security protocol like SSL, at-rest encryption, two-factor authentication. Meanwhile, it allows all team member to edit, share and comment from any device.

In addition, it still has a big highlight for healthcare professionals – remain HIPAA/HITECH-compliant, has frictionless tools designed for the most regulated industries and data residency in 9 countries.

It’s a distinguish option for healthcare professionals. However, you need to think about its flaws, including no block-level transfers, upload file restriction to 5GB, very business-focused.

Backblaze B2

Key Features:

IaaS provider


Great transfer speed within US


Backbalze B2 is an Infrastructure-as-a-Service provider instead of traditional cloud service provider. Different from Backblaze, B2 sells resources to you as instead. You will get 10GB free space after sign up with Backblaze B2, then the extra space is only charged $0.005 cents per gigabyte. In addition, the first 1GB of downloaded data is free every day.

Yes, it’s really affordable for majority users, even the deciding factor. But you need to be aware that this version is not actual cloud storage, because there is no encryption and distributed infrastructure. Also, it stores everything in one data center in Sacramento, California, and make the transfer speed is slow outside US and put you under the jurisdiction of US data laws.


Key features:

Flexible cloud transfer and backup

Combine cloud storage into one

Cloud drive management

Fast upload speed

Unlimited file versioning



Cbackupper Main Page

CBackupper is a completely free cloud transfer & backup service provider, which can backup files to cloud freely and get unlimited cloud storage by combining the free space of enough cloud disks. And it will keep unlimited file versioning. In addition, you can manage all your cloud drives and its data at one platform.

So far only this software is free. It’s will be an excellent choice if you have and want to manage multiple cloud drive accounts. However, the unlimited storage requires enough cloud disks and the supported disks are limited currently.

Final words

Speaking of unlimited cloud storage, you may want to know unlimited cloud storage providers, unlimited cloud storage pricing, unlimited cloud storage comparison, then choose the one that suits you best. Just back to above and use the mentioned requirements to measure.