How to Add Extra Hard Drives to Proxmox 6.2 VE

I have been running the Proxmox 6.2. VE in the last few months. Now I am running out of disk space to store my VMs, backup, and snapshots. I definitely need an extra hard drive for my Proxmox system. And today, I will add an extra 1 TB of the hard drive to my existing system. Currently, I have a 250 GB SSD drive installed. So in this article, you will see how I managed to install a new hard disk and configure it on the Proxmox server.

Steps to Add Extra Hard Drive to Proxmox

First, make sure you have connected the hard drive to the server. And then login to the Proxmox console or connect it via SSH from other computer.

Identify the new disk



In this case, my disks are sda and sdb. As you can see, my 1 TB hard drive is identified as sda. So we are going to work with this sda drive.

Format the drive

We are going to format the drive using parted. Please check if you have parted installed. If not, you can use this command to install

apt policy parted
apt install parted

Create a new partition table of type GPT. Instead of using MBR, I prefer to use GPT because it is newer and also supports more than 2 TB disk.

parted /dev/sda mklabel gpt

Now, lets make a new primary partition with Ext4 filesystem and use 100% of the disk.

parted -a opt /dev/sda mkpart primary ext4 0% 100%

Now, check with lsblk command to see the new layout

As you can see, now there is a new partition sda1. So, we are good to go. Now let’s create the ext4 filesystem on the sda1.

mkfs.ext4 -L storage2 /dev/sda1

Mount the New Disk

Now let’s create a new directory and mount the new partition.

mkdir -p /mnt/storage2

Modify the /etc/fstab so it will be mounted automatically upon system boots.

nano /etc/fstab

Add the following line

LABEL=storage2 /mnt/storage2 ext4 defaults 0 2

Mount the drive

mount -a

Now check with lsblk command again

As you can see, now the /dev/sda1 is mounted as /mnt/storage2.

Prepare for Proxmox VM Backup

Now, we are going to prepare the disk to store the VM backups. We will create a special folder for this purpose.

mkdir /mnt/storage2/vm_backup

Now, open the Proxmox web management console and navigate to Datacenter >> Storage >> Add>>Directory. Enter the required information there.

Click Add and you are good to go.

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