# Data tiering (hot, warm and cold storage)

**URL:** <https://discuss.elastic.co/t/data-tiering-hot-warm-and-cold-storage/267814>\
**Category:** Elasticsearch\
**Created:** [March 19, 2021, 1:29pm UTC](https://discuss.elastic.co/t/data-tiering-hot-warm-and-cold-storage/267814 "2021-03-19T13:29:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![parthmaniar](https://avatars.discourse-cdn.com/v4/letter/p/71e660/32.png) [@parthmaniar](https://discuss.elastic.co/u/parthmaniar)\
**Post date:** [March 19, 2021, 1:29pm UTC](https://discuss.elastic.co/t/data-tiering-hot-warm-and-cold-storage/267814/1 "2021-03-19T13:29:35Z")

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Hello, I am a self-funded student with a homelab wherein I am capturing honeypot logs. I have a workstation with SSD storage wherein one disk holds the VMs OS (Ubuntu server 20.04.2 LTS), and the second SSD contains a data partition mounted on the VMs where I've configured elasticsearch to store the data. I'm quickly running out of space, and I have to keep deleting older indices, which would help my final year dissertation. I cannot add/purchase higher capacity SSDs due to technical/financial constraints, respectively. I have a three node cluster with 2 data nodes and one voting node.

Is there a way to automatically move data that is older than one (or more) months to a NAS that I have? It has 7200 RPM HDDs, and using that causes an IOPS block for me. However, if I can mount a partition from here to the VMs and move the data automatically, with compression, I may be able to finish the year without additional expenses.

I know how to mount the partition from the HDDs (I am using iSCSI to add the disks to ESXi & later mount to the VMs)

I need assistance understanding if there is a possibility to compress and save indices wherein IOPS/retrieval time is affected, but data is searchable and retained.

Here is the help I need:

1. Will tiering help with compression?
2. Can I have two independent paths for indice storage - 1) Hot storage on the SSD and 2) warm/cold storage on the NAS HDD (mounted on the VM)
3. Can I use automated way (ILM) to perform this migration?
4. Will I be able to "search" (I do not need write) to indices in warm/cold storage?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 16, 2021, 1:30pm UTC](https://discuss.elastic.co/t/data-tiering-hot-warm-and-cold-storage/267814/2 "2021-04-16T13:30:03Z")

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