# General hardware recommendations **URL:** \ **Category:** Elasticsearch\ **Created:** [September 19, 2019, 8:40am UTC](https://discuss.elastic.co/t/general-hardware-recommendations/200151 "2019-09-19T08:40:14Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![paulcarey](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/paulcarey/32/34624_2.png) [@paulcarey](https://discuss.elastic.co/u/paulcarey)\ **Post date:** [September 19, 2019, 8:40am UTC](https://discuss.elastic.co/t/general-hardware-recommendations/200151/1 "2019-09-19T08:40:14Z")
Hi I'm extending an existing ES cluster and am looking for general hardware recommendations e.g. of the form listed [here](https://www.elastic.co/blog/performance-considerations-elasticsearch-indexing). That document is now a few years old and I assume some of the guidance has been updated, but I haven't found a more recent version. The closest I could find is a document on [Elastic Cloud Enterprise](https://www.elastic.co/guide/en/cloud-enterprise/2.3/ece-planning-hw.html), but I'm not sure how relevant its contents are. In particular, I have the following questions: - Is it ok to create an ES cluster from a combination of bare metal machines and containerized instances, or is the disparity in performance likely to cause issues? - In general, should the hosts in a cluster be as similar as possible? - Does the recommendation against placing indexes on a remotely mounted filesystem, e.g. NFS, still stand? - Is there a recommendation against RAIDing local disks used for indexes? Many thanks Paul ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 17, 2019, 8:40am UTC](https://discuss.elastic.co/t/general-hardware-recommendations/200151/2 "2019-10-17T08:40:15Z")
This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.