# Speed up reindex **URL:** \ **Category:** Elasticsearch\ **Created:** [November 26, 2018, 11:25pm UTC](https://discuss.elastic.co/t/speed-up-reindex/158252 "2018-11-26T23:25:42Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![nayun\_oh](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nayun_oh/32/46442_2.png) [@nayun\_oh](https://discuss.elastic.co/u/nayun_oh)\ **Post date:** [November 26, 2018, 11:25pm UTC](https://discuss.elastic.co/t/speed-up-reindex/158252/1 "2018-11-26T23:25:42Z")
I need to reindex a large index as a backup. But It takes a lot of time. one minute per 2 giga bytes. I have set indices.index buffer size to 70% in elasticsearch.yml and refresh interval to -1. Can you give me some advice? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [November 26, 2018, 11:32pm UTC](https://discuss.elastic.co/t/speed-up-reindex/158252/2 "2018-11-26T23:32:59Z")
Increase the resources to your cluster - memory, cpu, use SSDs. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [December 5, 2018, 10:40am UTC](https://discuss.elastic.co/t/speed-up-reindex/158252/3 "2018-12-05T10:40:22Z")
A post was split to a new topic: [Improve reindex speed into new cluster](https://discuss.elastic.co/t/improve-reindex-speed-into-new-cluster/159511) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 2, 2019, 10:40am UTC](https://discuss.elastic.co/t/speed-up-reindex/158252/4 "2019-01-02T10:40:28Z")
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