# Catch up of multiple missed backups

**URL:** <https://forum.duplicati.com/t/catch-up-of-multiple-missed-backups/1738>\
**Category:** Support\
**Created:** [December 14, 2017, 7:07am UTC](https://forum.duplicati.com/t/catch-up-of-multiple-missed-backups/1738 "2017-12-14T07:07:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![JonMikelV](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/j/439d5e/32.png) [@JonMikelV](https://forum.duplicati.com/u/JonMikelV)\
**Post date:** [December 14, 2017, 8:34pm UTC](https://forum.duplicati.com/t/catch-up-of-multiple-missed-backups/1738/2 "2017-12-14T20:34:41Z")

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The way the queue works a single job is not supposed to appear more than once, so if you seem to be experiencing that then there’s a bug.

One way to check what’s in the queue is to use the main menu “About” item, then click on the “System info” button, then scroll down to the “Server state properties” section and find the following lines:

- `activeTask` is the ID of the currently running task (if any)
- `proposedSchedule` is the “not yet in queue, but expected to be put in queue at …” list
- `schedulerQueueIds` is the list of items CURRENTLY in the queue

(Thanks for kenkendk for the above descriptions!)

For a summary of how the scheduler is supposed to run, see here:

> [@Scheduling strategy for backups](https://forum.duplicati.com/t/scheduling-strategy-for-backups/1309/6):
>
> If I turn on my NAS (synology) it also immediately starts a backup if it missed one if I remember correctly.

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_[View the full topic](https://forum.duplicati.com/t/catch-up-of-multiple-missed-backups/1738)._