Does cPanel backup accounts 1-by-1 or multiple at once?

Operating System & Version
cPanel & WHM Version


Jan 12, 2023
cPanel Access Level
Root Administrator
Hi guys,

Let's say we have following scenario.

A cPanel Server is using the in-built backup system. There is an additional backup destination, configured as S3 to iDrive.

The "Retain Backups in the Default Backup Directory" is disabled.

There is one weekly backup configured to run at the end of the week.

Two questions:

When the server starts backing up accounts as per the configured schedule does it backup them 1-by-1 (ex. create archive, waits for it to upload to S3 destination, deletes it and moves to next one) or it will do a few accounts at once(create a few archives, wait for them to upload to S3, delete them and move to next ones)?

The other question is: Is there a timeout limit for the schedule to run (ex. it has to complete by X amount of time) or it will run until it has backed up everything?


Jurassic Moderator
Staff member
Oct 19, 2014
cPanel Access Level
Root Administrator
Hey there! The backup is sequential - if you check the logs in /usr/local/cpanel/logs/cpbackup, you can see it performs one account at a time, ensuring that is good before moving to the next domain.

There is no time limit on the backups as it will take as long as necessary to run until they are complete. The only issue you can run into is if your backups take longer than 24 hours - this can mean your backup schedule is not followed if it tries to trigger a new run before the previous run has completed.
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