# ECE RAM to Storage Ratio **URL:** \ **Category:** Elastic Cloud Enterprise (ECE)\ **Created:** [September 26, 2017, 3:35pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878 "2017-09-26T15:35:14Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![adesouza](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@adesouza](https://discuss.elastic.co/u/adesouza)\ **Post date:** [September 26, 2017, 3:35pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/1 "2017-09-26T15:35:15Z")
Hi, I was looking at how to change the RAM to storage ratio in ECE, I found a couple of threads asking the same question that had links to [https://www.elastic.co/guide/en/cloud-enterprise/current/ece-change-ratio.html](https://www.elastic.co/guide/en/cloud-enterprise/current/ece-change-ratio.html) and [https://www.elastic.co/guide/en/cloud-enterprise/current/ece-manage-topology-types.html](https://www.elastic.co/guide/en/cloud-enterprise/current/ece-manage-topology-types.html) but these are both missing now. Is this something that can be configured? Can a different ratio also be configured for dedicated Master nodes? The VMs that we can provision don't fit with the 1:32 ratio. Thanks, Aaron ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 26, 2017, 4:53pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/2 "2017-09-26T16:53:34Z")
Hi @adesouza In 1.0 there is unfortunately no way of globally configuring the ECE RAM to storage ratio - this will be supported in a forthcoming minor release version (but probably not the next one) Currently if you want to allocate a different one you have to do it per cluster by setting the `overrides.quota.fs_multiplier` parameter via the advanced config page (or using the [raw metadata API](https://www.elastic.co/guide/en/cloud-enterprise/master/set-es-cluster-metadata-raw.html)) Alex ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 26, 2017, 4:55pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/3 "2017-09-26T16:55:44Z")
> [@adesouza](#): > > Can a different ratio also be configured for dedicated Master nodes Master nodes have no quota at all since they don't store data ---
**Author:** ![adesouza](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@adesouza](https://discuss.elastic.co/u/adesouza)\ **Post date:** [September 27, 2017, 9:10am UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/4 "2017-09-27T09:10:07Z")
> [@Alex\_Piggott](#): > > > [@adesouza](#): > > > > Can a different ratio also be configured for dedicated Master nodes > > Master nodes have no quota at all since they don't store data In the ECE UI my master node is showing as having 32GB of disk space assigned. ![master_node](https://us1.discourse-cdn.com/elastic/original/3X/e/a/ea5e4094af2728051888a6a501e3e4177c8ceed5.png) ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 12:48pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/5 "2017-09-27T12:48:45Z")
@adesouza ha fair point 🙂 I glossed over the details Master nodes have a quota and are treated identically to data nodes in this regards, BUT: - They can't actually store data so they never use it up - the data storage volume is shared between all the clusters, so if you don't actually use your quota it does not impact the actual disk usage of the host eg if you had a 100GB disk, you could have eg 20 masters all claiming to use 32GB and the disk usage would just be 20x the container overhead ---
**Author:** ![IanGabes](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/iangabes/32/22568_2.png) [@IanGabes](https://discuss.elastic.co/u/IanGabes)\ **Post date:** [September 27, 2017, 1:34pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/6 "2017-09-27T13:34:25Z")
> Currently if you want to allocate a different one you have to do it per cluster by setting the overrides.quota.fs\_multiplier parameter via the advanced config page Thanks very much for this information! Maybe I missed it in the documentation, but is there a place I can find other overrides, and their type definitions? I am currently testing out this parameter with a integer type, but this is a guess without the documentation. Thanks in advance! ---
**Author:** ![adesouza](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@adesouza](https://discuss.elastic.co/u/adesouza)\ **Post date:** [September 27, 2017, 1:34pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/7 "2017-09-27T13:34:58Z")
@Alex_Piggott Great, thanks for clearing that up. With regards to the `overrides.quota.fs_multiplier`parameter, where exactly in the json (plan or data?) do I need to add this? ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 1:42pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/8 "2017-09-27T13:42:41Z")
@IanGabes - apologies, currently they are undocumented internal fields that we mention only when we need to help people work around limitations in 1.0 With each minor release we are adding curated and documented models to the [API](https://www.elastic.co/guide/en/cloud-enterprise/current/ece-api-reference.html) for the settings that are currently only exposed via this "advanced" page In the meantime do ask here and we'll dispense "tribal knowledge" on the fields with the proviso that they are not considered stable across version releases The `fs_multiplier` field should be an integer and is mulitplied by the cluster capacity (in GB) to provide the disk quota - let me know if you need any more details on that An example of its use (inserted at the top level of the "Data" field under `config/advanced` ```auto "overrides": { "quota": { "fs_multiplier": 35 } }, ``` ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 1:46pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/9 "2017-09-27T13:46:59Z")
@adesouza To set the `fs_multiplier`, go to the cluster's manage page and near the bottom there is a field called "Advanced Cluster Configuration", with a clickable link: ![image](https://us1.discourse-cdn.com/elastic/original/3X/c/f/cf18893e1571ebef2923a3a87bf68e617a06f66c.png) Clicking on that takes you to a page with 2 JSON boxes. The lower of which is marked "Data". Insert the JSON mentioned in the previous post at the top level of that lower box, and hit the "Save" button right at the bottom of the screen: ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/4/b4a0e8a61cd0ceca46b6b2592bf4f940a3dc86b6.png) It will instantly take effect, it's not like a plan change that goes through lots of steps to complete. ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 1:55pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/10 "2017-09-27T13:55:46Z")
@IanGabes The 2 other "override" fields that have proven useful so far are: ```auto "resources": { "cpu": { "hard_limit": true } }, ``` If you set `hard_limit` to `false` then the cluster gets the entire CPU of the host instead of a sub-set determined by its size. Obviously this is not without risk to the overall platform stability ```auto "overrides": { "resources": { // (needed for 1.1+) "cpu": { "factor": 1.3 } } }, ``` A safer way of boosting the CPU for a given cluster is by setting `factor` ... eg to double the CPU available change from `1.3` (the default) to `2.6` (at the same level as `factor` is `processors`, an integer which determines how many processors Elasticsearch believes its container has, so will change the thread pool defaults etc - we haven't found any case where this makes a noticeable change over the hand-curated-vs-cluster-size defaults) ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 1:58pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/11 "2017-09-27T13:58:50Z")
I should add that apart from `hard_limit`, these fields only get applied instantly from ECE 1.0.2 onwards (with 1.0.1- they have to be associated with a plan change). Needless to say, running with ECE 1.0.2 is recommended! ---
**Author:** ![adesouza](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@adesouza](https://discuss.elastic.co/u/adesouza)\ **Post date:** [September 27, 2017, 3:43pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/12 "2017-09-27T15:43:12Z")
@Alex_Piggott I copied the `fs_multiplier`above to the Data json of my cluster, but nothing changed - I was expecting the disk capacity to now show 35GB, but it's still showing 32GB. I'm using 1.0.2. ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 3:59pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/13 "2017-09-27T15:59:27Z")
@adesouza ... ah yes sorry, one other thing i should have mentioned is that it doesn't get displayed in the overview ☹ ... but it _has_ been applied ... this was always a stopgap so it doesn't have great UI support, apologies (note: your post has prompted lots of internal discussions about how to improve this for the not-too-far-off 1.1 release, since the full solution is now expected in 1.3 ie 2018) ---
**Author:** ![Alex\_Piggott](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alex_piggott/32/11053_2.png) [@Alex\_Piggott](https://discuss.elastic.co/u/Alex_Piggott)\ **Post date:** [September 27, 2017, 5:51pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/14 "2017-09-27T17:51:33Z")
There is an internal API call that appears to allow you to set the default ratio: ```auto export HOST="http://address:12400" export PASSWORD="password of root" #(to login) export AC_TOKEN=$(curl -s "$HOST/api/v0.1/login" -XPOST -d "{\"username\": \"root\", \"password\": \"$PASSWORD\"}" | jq -r '.token') && export AC_AUTH="Authorization: Bearer $AC_TOKEN" && echo $AC_AUTH #to make the change, eg here I set it to 64: curl -XPUT --header "$AC_AUTH" "$HOST/api/v0.1/regions/ece-region/node_types/elasticsearch/default" -d "{\"node_type_id\":\"default\",\"overrides\":{\"instance_data\":{\"overrides\":{\"quota\":{\"fs_multiplier\":64}}}}}}" # {"node_type_id":"default","overrides":{"instance_data":{"overrides":{"quota":{"fs_multiplier":64}}}},"ok":true} #To check run: curl -XGET --header "$AC_AUTH" "$HOST/api/v0.1/regions/ece-region/node_types/elasticsearch" # {"node_type_id":"default","overrides":{"instance_data":{"overrides":{"quota":{"fs_multiplier":64}}}},"ok":true} ``` Provided the cluster is provisioned with `node_configuration_id: "default"` (which should be the default), then that should pick up the new settings (which _should_ be picked up via the UI) Note this is an unsupported feature in 1.0 (though I just had a play and it does appear to work) and will likely change in 1.1 (we will likely add a supported equivalent in to replace it)! ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [October 11, 2017, 5:52pm UTC](https://discuss.elastic.co/t/ece-ram-to-storage-ratio/101878/15 "2017-10-11T17:52:18Z")
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