Software RAID: Difference between revisions
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mdraid has zero checks for bitrot, data integrity, and most filesystems on top do not provide that either. | mdraid has zero checks for bitrot, data integrity, and most filesystems on top do not provide that either. | ||
That means, | That means, sooner or later some data will be corrupt, and you normally do not notice until it's too late. | ||
So, Proxmox projects do '''not''' support it to avoid that users run into these problems! | |||
For non-production/unsupported setups, where you still want to use mdraid (please don't!), you can create the required RAID level during Debian installation and then install Proxmox VE or create RAID after install Proxmox VE. | For non-production/unsupported setups, where you still want to use mdraid (please don't!), you can create the required RAID level during Debian installation and then install Proxmox VE or create RAID after install Proxmox VE. | ||
Revision as of 07:44, 29 March 2021
Introduction
Software RAID is an alternative for using hardware-RAID controller for local storage. Please note that Proxmox VE currently only supports one technology for local software defined RAID storage: ZFS
Supported Technologies
ZFS
If you want to run a supported configuration, using a proven enterprise storage technology, with data integrity checks and auto-repair capabilities ZFS is the right choice.
See the ZFS on Linux article for more information.
Unsupported Technologies
btrfs
btrfs is actually a safe choice, but not yet supported by Proxmox VE. It will be re-evaluated for Proxmox VE 7.0.
mdraid
mdraid has zero checks for bitrot, data integrity, and most filesystems on top do not provide that either.
That means, sooner or later some data will be corrupt, and you normally do not notice until it's too late. So, Proxmox projects do not support it to avoid that users run into these problems!
For non-production/unsupported setups, where you still want to use mdraid (please don't!), you can create the required RAID level during Debian installation and then install Proxmox VE or create RAID after install Proxmox VE. Look at the following pages:
- Debian 9 - Install Proxmox VE on Debian Stretch
- Debian 10 - Install Proxmox VE on Debian Buster
If you need further assistance for md-raid it's another good sign that you do not want to choose that technology.