# CPU/Memory/Storage - which one affects ELK's performance more? **URL:** \ **Category:** Elastic Community and Ecosystem\ **Created:** [November 13, 2018, 9:15am UTC](https://discuss.elastic.co/t/cpu-memory-storage-which-one-affects-elks-performance-more/156422 "2018-11-13T09:15:33Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Kamome](https://avatars.discourse-cdn.com/v4/letter/k/7ab992/32.png) [@Kamome](https://discuss.elastic.co/u/Kamome)\ **Post date:** [November 13, 2018, 9:15am UTC](https://discuss.elastic.co/t/cpu-memory-storage-which-one-affects-elks-performance-more/156422/1 "2018-11-13T09:15:34Z")
I'm planning to expand and move to on-premise my ELK Stack. For now, my ELK is built on OpenStack private cloud, and I couldn't improve my stack's performance as I desired. So, I'm looking for suitable hardware, but I don't know which one will affect to ELK performance most: CPU, RAM or Storage. I want to focus my budget to most performance-related components, so, which one will affect performance most? ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [November 13, 2018, 9:17am UTC](https://discuss.elastic.co/t/cpu-memory-storage-which-one-affects-elks-performance-more/156422/2 "2018-11-13T09:17:56Z")
That would depend on the use-case, so it is impossible to give any recommendations without more information. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 11, 2018, 9:17am UTC](https://discuss.elastic.co/t/cpu-memory-storage-which-one-affects-elks-performance-more/156422/3 "2018-12-11T09:17:57Z")
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