# Configuration to maximize resoration performance

**URL:** <https://discuss.elastic.co/t/configuration-to-maximize-resoration-performance/326610>\
**Category:** Elasticsearch\
**Tags:** snapshot-and-restore\
**Created:** [February 27, 2023, 3:17pm UTC](https://discuss.elastic.co/t/configuration-to-maximize-resoration-performance/326610 "2023-02-27T15:17:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kronx12](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kronx12/32/117821_2.png) [@kronx12](https://discuss.elastic.co/u/kronx12)\
**Post date:** [February 27, 2023, 3:17pm UTC](https://discuss.elastic.co/t/configuration-to-maximize-resoration-performance/326610/1 "2023-02-27T15:17:22Z")

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Hi everyone,  
I have actually setup elasticsearch on an ec2 instance, I currently have 16 cores, 32GB of ram and for the storage I use an gp3 EBS volume of a 1TB but the problem is the next:

I need to restore a massive amount of backups from an S3 Bucket (maybe 500tb), and when I start a snapshot restoration, it take around 3 hours for a snapshot of 400gb...  
When I check the core usage with `htop` it only use aroud 3 percent of a core and 10gb of ram for the entire instance.

I'm trying many options but my CPU is never used

How can I give all the power of the instance to elasticsearch ? And if possible, how can I optimize the restoration speed ?

Thank's everyone by advance.  
Guillaume

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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:** [March 27, 2023, 3:17pm UTC](https://discuss.elastic.co/t/configuration-to-maximize-resoration-performance/326610/2 "2023-03-27T15:17:51Z")

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