Difference between revisions of "Software RAID"

From Proxmox VE
Jump to navigation Jump to search
(→‎Reasons: SoftwareRaid1 Howto on Singlehost by Oerb)
(fix grammer)
(18 intermediate revisions by 8 users not shown)
Line 1: Line 1:
We do not support '''Software RAID (mdraid)''' in offical Proxmox kernel.
+
== Introduction ==
 +
All Proxmox VE versions do not support '''Linux Software RAID (mdraid)'''. That means, it's not tested in our labs and not recommended, but it's still used by experienced users. If you want to run a supported configuration, go for [[Hardware RAID|Hardware RAID]] or a ZFS RAID during installation.
  
== Reasons ==
+
NOTE:
The basic reason is that proxmox.com want to offer support for their system, and software raid would cause unjustified burden for us.
+
* Proxmox VE 2.x supports Fake RAID (BIOS RAID), but not since Proxmox VE 3.x
 +
* Proxmox VE since 3.4 supports Software RAID if you choose [[Storage:_ZFS]]
  
The problems are:
+
If you still want to use mdraid, 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 external links below and the following pages:
# Most system admins are unable to recover from a software raid error because they never read the documentation.
 
# RAID1 is not the onyl raid level - I we want to fully support software raid we need a quite complex interface to configure that (RAID5, RAID10, ..)
 
# We want to use LVM2 (snapshots). This adds an additional level of complexity, i.e. if you recover or if you want to extend your system by adding harddisks.
 
# One single failed disk can make the whole system unusable - we observed this with sotware raid - but never with hardware raid
 
  
* The developers know that Proxmox VE will not work with soft raid [http://www.proxmox.com/forum/showpost.php?p=4406&postcount=3]
+
* [[Install Proxmox VE on Debian Squeeze]]
* It creates problems in proxmox special setup
+
* [[Install Proxmox VE on Debian Wheezy]]
* May stop working after an upgrade
+
* [[Install Proxmox VE on Debian Jessie]]
  
See also forum: http://www.proxmox.com/forum/showthread.php?t=398
+
== External Links ==
== Comunity ==
+
* http://www.howtoforge.com/proxmox-2-with-software-raid
 +
* http://forum.proxmox.com/threads/14299-German-HowTo-Proxmox-VE-3-0-with-Software-RAID
 +
* Youtube video: [http://www.youtube.com/watch?v=19mqWyGidVY Setting up simple software RAID-1 on Debian 5]
 +
* https://www.howtoforge.com/how-to-set-up-software-raid1-on-a-running-system-incl-grub2-configuration-debian-squeeze
  
A German introduction to a Software Raid1. It just works on a single Host without Clustersupport. [http://oerb.de/index.php?option=com_content&view=article&id=66:proxmox-ve-mit-raid-howto&catid=22:administration&Itemid=12]
+
[[Category: HOWTO]]

Revision as of 13:33, 21 January 2020

Introduction

All Proxmox VE versions do not support Linux Software RAID (mdraid). That means, it's not tested in our labs and not recommended, but it's still used by experienced users. If you want to run a supported configuration, go for Hardware RAID or a ZFS RAID during installation.

NOTE:

  • Proxmox VE 2.x supports Fake RAID (BIOS RAID), but not since Proxmox VE 3.x
  • Proxmox VE since 3.4 supports Software RAID if you choose Storage:_ZFS

If you still want to use mdraid, 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 external links below and the following pages:

External Links