The Vormox blog
Guides, deep dives and product news on automating Proxmox VE at scale.
How to Resize a Virtual Disk in Proxmox VE (Without Losing Data)
Your Proxmox VM's disk is full and you don't want to rebuild it. Here's how to grow a virtual disk safely in Proxmox VE 9.2, then extend the partition and filesystem inside Linux or Windows guests.
Speeding Up HDD-Backed ZFS Pools in Proxmox VE with a Special Device
HDD-backed ZFS pools on Proxmox VE and PBS choke on metadata-heavy operations like garbage collection and snapshot listing. Here's how a mirrored ZFS special device fixes it, with diagnosis, commands, and sizing guidance.
How to Set Up a VLAN-Aware Bridge in Proxmox VE
A beginner-friendly guide to VLANs in Proxmox VE — what a VLAN-aware bridge does, how to enable it, how to tag individual VMs, and the trunk port setting that trips up almost everyone the first time.
Setting Up a Corosync QDevice for Two-Node Proxmox VE Cluster Quorum
A two-node Proxmox VE cluster loses quorum the moment one node reboots. Here's why the vote math breaks down and how to fix it permanently with an external corosync QDevice as a tie-breaker.
What Is a Proxmox Cluster? (And Do You Actually Need One?)
Clustering sounds like something only data centers need, but it's really just several Proxmox nodes agreeing to share one view. Here's what Corosync and quorum actually mean, and when you genuinely need a cluster versus when you don't.
Disarming HA in Proxmox VE 9.2: Safe Cluster-Wide Maintenance Without Fencing
Proxmox VE 9.2 adds cluster-wide disarm-ha and arm-ha commands so you can do network maintenance on an HA cluster without triggering fencing. Here's how the feature works and how to use it safely.
Speeding Up Metadata-Heavy Workloads on Proxmox VE with ZFS Special Allocation Class Vdevs
Directory listings and PBS garbage collection crawling on an otherwise fast ZFS pool? A special allocation class vdev moves metadata off spinning disks and onto SSD without rebuilding the pool.
How to Create Your First LXC Container in Proxmox VE
Virtual machines feel heavy for small Linux services. Here is how to create, start, and manage your first LXC container in Proxmox VE using the web interface and the pct command line tool.
How to Add a Second Hard Drive to a Proxmox VM
A step-by-step guide to adding a second virtual disk to a Proxmox VE virtual machine, from the Proxmox GUI through partitioning, formatting, and mounting it inside Linux.