What is the difference between cloud storage and cloud backup?
The short answer
Cloud storage syncs a folder across your devices. Cloud backup copies your whole computer and keeps old versions. Storage services like Dropbox, Google Drive and pCloud pass every change and deletion on to all your devices. Backup services like Backblaze and IDrive let you go back to before a mistake, a theft or a ransomware attack.
In detail
The two are easy to mix up because both put your files on someone else’s servers. They differ in what they protect you from. A sync service mirrors your working files. Every edit and every deletion syncs within seconds, and so does a file encrypted by malware. It protects you well against a lost laptop. A mistake or an attack reaches the cloud copy just as quickly.
A backup service works the other way round. It watches your machine and keeps archiving what it sees. Its versions go back days or months. Delete a folder by accident and the backup still holds yesterday’s copy. If ransomware encrypts your documents, the backup still has the clean versions from before the attack. That is why security agencies like CISA put versioned backups at the center of ransomware defense.
Most people end up wanting one of each. A sync drive like pCloud, Google One or Sync.com holds the files you work on across devices. A true backup like Backblaze or IDrive quietly archives the whole machine. Together they follow the classic 3-2-1 rule. The pair costs less per month than two streaming subscriptions. It helps to see the sync drive and the backup as two separate things.
Online backup vs cloud storage comes down to one test. Open the service and try to restore a folder as it looked three weeks ago. Backup services offer that right in the app. With storage services you restore file by file from version history, if they keep any.
The retention windows show the difference plainly. Backblaze keeps 30 days of versions and lets you extend that. IDrive keeps up to 30 versions of every file. pCloud is a storage service and keeps 30 days. Google One keeps a limited history. That is why we count it as storage.
Price is not what sets them apart. Backblaze backs up one computer without limit for $99 a year. IDrive covers 5 TB across every device for $83.88 in the first year and renews at $119.88. A 2 TB storage plan such as pCloud Premium Plus or Dropbox Plus costs $99.99 to $119.88 a year.
The word backup can mean different things. Several storage services use it for their phone photo upload or their folder sync. Two questions tell you what you are getting. Does it copy the whole machine? Can you roll the whole account back to a date?