# Best disk modes for data nodes (VMVare ESX)

**URL:** <https://discuss.elastic.co/t/best-disk-modes-for-data-nodes-vmvare-esx/338898>\
**Category:** Elasticsearch\
**Created:** [July 20, 2023, 3:57pm UTC](https://discuss.elastic.co/t/best-disk-modes-for-data-nodes-vmvare-esx/338898 "2023-07-20T15:57:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![alissan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alissan/32/101448_2.png) [@alissan](https://discuss.elastic.co/u/alissan)\
**Post date:** [July 20, 2023, 3:57pm UTC](https://discuss.elastic.co/t/best-disk-modes-for-data-nodes-vmvare-esx/338898/1 "2023-07-20T15:57:44Z")

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I need to create a cluster on vmware esx with 60 data nodes.

Every node have 100GB disk for OS and 10TB disk (SSD) with for data fiber channel.

I'm looking for best vmware disk mode option for data nodes. There are 3 options in [this](https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vm_admin.doc/GUID-8B6174E6-36A8-42DA-ACF7-0DA4D8C5B084.html) vmware doc:

> Dependent
> 
> Dependent mode is the default disk mode. When you take a snapshot of a virtual machine, dependent disks are included in the snapshot. When you revert to the previous snapshot, all data are reverted to the point of taking a snapshot.
> 
> Independent - Persistent
> 
> Disks in persistent mode behave like conventional disks on your physical computer. All data written to a disk in persistent mode are written permanently to the disk even if you revert a snapshot. When you power off or reset a virtual machine, the disk and all its snapshots are preserved.
> 
> Independent - Nonpersistent
> 
> Disks in nonpersistent mode behave like read-only disks. Changes to disks in nonpersistent mode are discarded when you power off or reset the virtual machine. With nonpersistent mode, you can restart the virtual machine with a virtual disk in the same state every time. Changes to the disk are written to and read from a redo log file that is deleted when you power off or reset the virtual machine, or when you delete a snapshot.

I don't need snapshots for data disks.

I think independent - persistent is best option but i couldn't find and details in elasticsearch documents.  
Is there any risk for independent - persistent mode?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 17, 2023, 3:57pm UTC](https://discuss.elastic.co/t/best-disk-modes-for-data-nodes-vmvare-esx/338898/2 "2023-08-17T15:57:48Z")

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