# Elasticsearch 1.0 Snapshot - What happens when some of the incrementals are unusable?

**URL:** <https://discuss.elastic.co/t/elasticsearch-1-0-snapshot-what-happens-when-some-of-the-incrementals-are-unusable/15820>\
**Category:** Elasticsearch\
**Created:** [February 15, 2014, 12:23am UTC](https://discuss.elastic.co/t/elasticsearch-1-0-snapshot-what-happens-when-some-of-the-incrementals-are-unusable/15820 "2014-02-15T00:23:15Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tony\_Su](https://avatars.discourse-cdn.com/v4/letter/t/8dc957/32.png) [@Tony\_Su](https://discuss.elastic.co/u/Tony_Su)\
**Post date:** [February 15, 2014, 12:23am UTC](https://discuss.elastic.co/t/elasticsearch-1-0-snapshot-what-happens-when-some-of-the-incrementals-are-unusable/15820/1 "2014-02-15T00:23:15Z")

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Unable to find a recording for the slide deck posted at

> **[Snapshot/Restore in Elasticsearch 1.0](https://speakerdeck.com/elasticsearch/restore-in-elasticsearch-1-dot-0)**
>
> Lightning talk covering the Snapshot/Restore functionality forthcoming in the Elasticsearch 1.0 release.

An interesting scenario is described in slides 16-19 where some of the  
incrementals might not be usable (corrupted, missing, etc).  
The slides seem to suggest that a restore might still be possible using  
 the usable incrementals?

ES snapshot/restore looks like an interesting approach which if I  
understand the slides is not subject to the issues of ordinary incremental  
backups... In an ordinary incremental backup, an entire set is required  
including the base point where you begin making incrementals. If any  
incrementals in a normal backup is lost, then you would be able to restore  
only up to before the lost incremental.

Am suspecting that ES snapshots are incrementals that contain more or less  
completely independent data, so if any incrementals are lost you only lose  
the updated information in those incrementals but can restore both the  
updated data after the lost incrementals and the old, not updated data  
prior to the lost incrementals?

All of the above is speculation on my part, am wondering if any of it might  
be true.

Thx,  
Tony

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 1:49am UTC](https://discuss.elastic.co/t/elasticsearch-1-0-snapshot-what-happens-when-some-of-the-incrementals-are-unusable/15820/2 "2017-07-06T01:49:53Z")

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