Proxmox may have developed a massive following in the home server community, but this virtualization platform is just as powerful for enterprise-grade workloads. After all, Proxmox’s killer performance and KVM support are only a small subset of its features, with its advanced SDN stack, high-availability clusters, and compatibility with automation tools being super useful for business and DevOps-centric tasks.

Better yet, there are a handful of seemingly complex features that can even aid your casual PVE home lab. Having used Proxmox for a long time, here are the best settings, toggles, and tweaks that made my home server more reliable and foolproof.

Use RAID-powered ZFS pools

To add redundancy to my PVE setup

Proxmox uses ext4 as the file system for the storage pools, and while it’s not bad by any means, ZFS is clearly superior for server tasks. Sure, this beast of a file system requires more RAM to satisfy its RAM-devouring tendencies. But ZFS’ checksumming capabilities and Copy-on-Write design make it a lot more reliable for storing virtual guest data. That’s before you consider ZFS’ terrific support for RAID setups.

Now, RAID isn’t meant to replace proper backups (and I’ll go over those in a bit). Instead, it’s a neat way to add more redundancy to a Proxmox workstation using spare drives. Me? As much as I prefer RAID 10, I’ve only got three 2TB hard drives to work with. As such, I use the next best thing – RAIDZ 1 – to make my primary PVE node more reliable. If that sounds unfamiliar, RAIDZ 1 is pretty much equivalent to a conventional RAID 5 setup, minus the write hole problem.

Configure Log2Ram on the boot SSD

Write amplification can be a silent killer

Although I rely on hard drives for VMs and LXCs that require a lot of data, I prefer SSDs for my boot drives and virtual guests where I need performance over all else. My Windows and Arch Linux dev virtual machines are a good example of the latter, as I’d rather not deal with extra latency brought by hard drives. Unfortunately, SSDs carry the scourge called write amplification, which results in excessive write operations. Over time, this can degrade the lifespan of your SSDs, making solutions like Log2Ram a godsend if you’re as paranoid about your home lab’s health as I am.

True to its name, Log2Ram saves log files generated by your PVE server to the memory and routinely transfers them to the drives. That way, the host machine doesn’t constantly write logs to the SSDs. Sure, write amplification may not be as big of an issue on premium SSDs, but since I plan to use my Proxmox server for another decade, I’d rather use Log2Ram to preserve the lifespans of my SSDs.

Run a monitoring server 24/7

On a low-power Raspberry Pi, of course

I use Proxmox for a variety of reasons, and learning about virtualization, networking, and DevOps projects is one of them. Unfortunately, I’ve had my fair share of projects where a dumb mistake in a config file caused my virtual guests (and even the host, in some cases) to become inaccessible. Throw in the fact that container updates can break my self-hosted application stack, and a monitoring hub becomes a must-have for my home lab.

Pulse is my favorite monitoring application for Proxmox, as it meshes really well with the virtualization platform. Once you connect it with a PVE host, Pulse can pull the uptime, network, and detailed resource utilization statistics from your virtual guests and display them on its sleek interface. Likewise, you can pair your Proxmox Backup Server with Pulse to create a detailed log of your snapshot tasks. It’s also capable of sending alerts to a notification server, and I use it with Gotify to receive pings whenever my self-hosted services go down. Since I don’t want my Pulse monitoring hub to become inaccessible with the rest of my PVE virtual guests, I host it on a Raspberry Pi instead of running it on my Proxmox server.

Deploy Proxmox Backup Server

And create remote sync tasks

Even without a PBS instance, Proxmox can still back up VM and LXC data, and even send it to NAS shares and remote devices. However, Proxmox Backup Server adds some useful features that make it worth deploying. The incremental nature of backups created via PBS makes them fairly small, while the compression and deduplication provisions offered by Proxmox’s companion platform limit the amount of space hogged by my snapshots.

Recovering files from a Proxmox Backup Server is also pretty quick, thanks to the granular restore and live recovery facilities offered by the platform. Since PBS supports remote sync jobs, it can add more redundancy in the form of 3-2-1 backup schedules.

A couple more tips to enhance your Proxmox game

Besides these software tweaks, I’ve also made some changes in the underlying hardware to make my Proxmox hub more reliable. Since my server supports ECC memory, I’ve ditched conventional RAM sticks. This may seem somewhat overkill considering the higher cost of ECC RAM kits, but I’d rather spend extra to protect my home server from bit rot. My backwater town also has frequent blackouts, so a UPS is essential for my Proxmox and NAS nodes.

If you’re willing to shell out some money on extra hardware, a high-availability cluster can add even more reliability to your Proxmox setup. I recently built one using some old systems I had lying around, and while the nodes don’t have enough horsepower to run multiple VMs, the cluster works pretty well for my LXC collection.