# Number of Shards and replicas for HOT and WARM architecture **URL:** \ **Category:** Elasticsearch\ **Created:** [September 27, 2016, 12:41pm UTC](https://discuss.elastic.co/t/number-of-shards-and-replicas-for-hot-and-warm-architecture/61604 "2016-09-27T12:41:22Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![astro](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@astro](https://discuss.elastic.co/u/astro)\ **Post date:** [September 27, 2016, 12:41pm UTC](https://discuss.elastic.co/t/number-of-shards-and-replicas-for-hot-and-warm-architecture/61604/1 "2016-09-27T12:41:22Z")
Hi Team , I have been working on ELK stack from last few months , I m thinking to move my current architecture to hot and warm architecture . Currently I have 5 servers with 48 gigs of ram's , 1 TB HDD and 8 Core processor with client and master on seprate nodes . ( with 5 shards and 2 replicas ) After lot of inspections I found that my disk is bottle next for indexing due to which my indexing is slow . Disk writes almost busy all the times to 100% . So I am thinking to take 2-3 SSD servers of 250 GB SSD , 48 gb ram and 16-32 core processor for HOT nodes and 3 nodes as warm nodes which will have 1TB HDD 32 GB RAM and 8 Core Processor ( For Cost optimization ) In my infra current logs are most searched , so HOT nodes should have replica's to make search in kibana fast . So please suggest optimal number of nodes for HOT WARM architecture and thier configuration along with number of shards and replicas . Thanks & Regards Arvind ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 10:16pm UTC](https://discuss.elastic.co/t/number-of-shards-and-replicas-for-hot-and-warm-architecture/61604/2 "2017-07-05T22:16:57Z")