# Sizing a secondary Cluster with Frozen nodes and Searchable Snapshots

**URL:** <https://discuss.elastic.co/t/sizing-a-secondary-cluster-with-frozen-nodes-and-searchable-snapshots/373184>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-searchable-snapshots\
**Created:** [January 14, 2025, 2:15pm UTC](https://discuss.elastic.co/t/sizing-a-secondary-cluster-with-frozen-nodes-and-searchable-snapshots/373184 "2025-01-14T14:15:48Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\
**Post date:** [January 14, 2025, 6:53pm UTC](https://discuss.elastic.co/t/sizing-a-secondary-cluster-with-frozen-nodes-and-searchable-snapshots/373184/2 "2025-01-14T18:53:40Z")

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Hi @yago82

Lets start with some basics...

> [@yago82](#):
>
> I plan to use my **production cluster** (Platinum license) to store approximately **30 TB of data** on an **S3-based repository**. These 30 TB represent 13 months of log data, matching the desired retention period.

This confuses me as the Platinum License only supports Local Storage for all nodes (SSD / HDD / EBS, etc), not S3 based... so I am unclear what you mean by the above statement.

> [@yago82](#):
>
> I want to set up a **secondary cluster** (Enterprise license) to query the data through **searchable snapshots** , using **frozen nodes** to optimize costs.

2nd I am confused by your proposed Solution of Why you need a 2nd cluster in the first place? I doubt adding a 2nd cluster for 30TB of data will be more cost-effective than 1 properly configured/sized performant cluster (either Platinum / Enterprise)

3rd How are you planning to "Link / Migrate / Load" the data to the 2nd cluster... I bring this up because if you use CCS or CCR, all clusters involved need to have the same license level.

> [@yago82](#):
>
> - **Local storage requirements** :  
> Does the local storage of the secondary cluster need to have a capacity equivalent to the S3 repository (30 TB)? Or can it be sized with significantly less storage, for example, **4 TB**?
> - **Search performance across the entire dataset** :  
> If a frozen node has only **4 TB of local storage** , would it still be possible to execute a single search query covering the full 13-month data range?  
> Alternatively, would it require splitting the query into smaller time intervals to cover

In short, the Local Storage on the Frozen Tier i.e., 4TB of SSD, can be considered a cache of the Data in the Searchable Snapshot in S3 ... which can be up to ~90-100TB of searchable snapshots per node.

So there are some initial answers, but it is unclear what you are actually trying to accomplish and whether you would have a better TCO and whether the supported configuration is licensable.

You should contact your Elastic Account team to discuss....

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_[View the full topic](https://discuss.elastic.co/t/sizing-a-secondary-cluster-with-frozen-nodes-and-searchable-snapshots/373184)._