# How to calculate number of nodes of how to monitor when increase the node **URL:** \ **Category:** Elasticsearch\ **Created:** [July 30, 2014, 3:25am UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-nodes-of-how-to-monitor-when-increase-the-node/18965 "2014-07-30T03:25:34Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Warat\_Wongmaneekit](https://avatars.discourse-cdn.com/v4/letter/w/50afbb/32.png) [@Warat\_Wongmaneekit](https://discuss.elastic.co/u/Warat_Wongmaneekit)\ **Post date:** [July 30, 2014, 3:25am UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-nodes-of-how-to-monitor-when-increase-the-node/18965/1 "2014-07-30T03:25:34Z")
Now have 3 node (All is master,data) with 160GB data and data increase around 600MB every day percentage of job is 50% insert | 50% update. Now my cluster a bit slow. My question is 3 nodes is enough or how many nodes is enough. and how to calculate number of nodes my server spec CPU Intel(R) Xeon(R) CPU E3-1230 @ 3.20GHz RAM 32GB HDD 1.7TB JVM heap 18GB -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/261a8c87-698e-414a-b99b-a62f8ab2751e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/261a8c87-698e-414a-b99b-a62f8ab2751e%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 1:12am UTC](https://discuss.elastic.co/t/how-to-calculate-number-of-nodes-of-how-to-monitor-when-increase-the-node/18965/2 "2017-07-06T01:12:21Z")