Add multiple disks to single node proxmox

powersupport

Active Member
Jan 18, 2020
244
2
38
29
Hi,

Is it possible to add multiple disks to a single node Proxmox? if so, could you please share with us the possibilities here?

Thank you
 
Hi,

what exactly do you mean? Adding several disks to the physical nodes? Yes of course that is supported. There are several approaches you could take depending on your use-case/needs. Here are three options:
  1. Add them to zfs pools that also support different RAID levels or create a RAID array via btrfs during the installation process.
  2. Add disks later on and configure them through the GUI with a file system of your choice.
  3. Or add them to existing zfs pools.
Really there are many many possibilities depending on your exact use case and setup.
 
Hi,

The current setup is, it is a physical server with local lvm storage, the Proxmox is already installed and it is in production
In this scenario what is the best-recommended way to add an additional disk to the local storage?


Thank you
 

Attachments

  • disk-px.png
    disk-px.png
    5.4 KB · Views: 33
  • storage-px.png
    storage-px.png
    34.8 KB · Views: 35
Ok so since you have three separate disks that you want to add, its likely easier and more resilient to create a new zfs-based pool. You could for example add them to a RAIDZ array which would provide you with redundancy allowing for at least one drive failure as well as increased read write performance. This comes at the loss of some usable space, you'll likely only have about 3,5TB available.

To do so you can go to the node > Disks > ZFS > Create ZFS. From there give the new pool a name, select the disks you want to add and the RAID level. Depending on what exactly you need/want you could go with Single DIsk (adding each disk as a different ZFS pool, maximizing available storage space), Mirror (this will give you maximum redundancy by storing everything on all three disks, so you will not see a performance increase and the available space will be the size of the smallest disk in the pool (1.94TB)) or RAIDZ (see above).
 
If you go the ZFS route, you could also consider reinstalling the node directly with a ZFS raid10 (for example) over all four of your disks.
 
  • Like
Reactions: sterzy

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!