Linux Dedicated Servers: How to Choose the Right Distribution

What is a Linux dedicated server?

A Linux dedicated server is a single physical machine, rented by one tenant, running a Linux distribution directly on the hardware. There is no hypervisor and no other customers sharing the CPU, memory, or NVMe — you get every core and predictable, uncontended performance, along with full root access to the box.

That is the key difference from a VPS or a cloud instance, where you rent a slice of a shared host. On bare metal there is no "noisy neighbour," no virtualisation overhead, and no per-IOPS or per-egress metering surprises.

When bare metal beats a VPS or cloud instance

A dedicated server is the right call when you need one or more of the following:

• Sustained, predictable load — databases, game servers, CI runners, and video work that would be throttled or billed unpredictably on shared cloud.
• Raw I/O — local NVMe with no virtualised storage layer in between.
• Full control — custom kernels, nested virtualisation, or specific hardware features.
• Cost stability at scale — a flat monthly price instead of metered egress and IOPS.

If your workload is spiky and mostly idle, a VPS may be more economical. If it is steady and performance-sensitive, bare metal usually wins on both performance and total cost.

Choosing a distribution: the short version

Every mainstream server distribution will run your software. The choice is really about release cadence, support length, and cost model, not capability. Here is the quick version:

• Want the largest ecosystem, newest kernels, and cloud-init automation? Ubuntu.
• Want a minimal, rock-stable base with no subscription and long freeze cycles? Debian.
• Coming from CentOS Linux? Look at AlmaLinux or Rocky Linux, not CentOS itself (see below).
• Need certified, vendor-backed support for compliance or third-party software? RHEL.

Distribution comparison

Ubuntu

Ubuntu is the safe default and the most widely deployed server Linux: the largest package base, first-class cloud-init automation, and the deepest pool of images and tutorials for Docker, Kubernetes, and virtually every runtime. LTS releases land every two years with five years of standard support, extendable further with Ubuntu Pro.

If you are not sure, start here. See our Ubuntu dedicated servers for configurations and specifics.

Debian

Debian trades Ubuntu's newer packages for a famously stable base and long freeze cycles, with no vendor or subscription attached. Operations teams that value "install it and leave it" — and a minimal footprint — often prefer Debian for exactly that reason. It shares apt and dpkg with Ubuntu, so day-to-day administration feels familiar. That stability is also why Debian underpins Proxmox VE — if you are weighing a hypervisor rather than a plain distribution, see our bare-metal hypervisor guide.

See our Debian dedicated servers for configurations and Debian-specific details.

The CentOS question: Stream, AlmaLinux, and Rocky

This is the one that trips people up in 2026. CentOS Linux is discontinued — CentOS 8 reached end of life at the end of 2021, and CentOS 7 reached end of life in mid-2024. Running either today means no security updates.

What replaced it:

• CentOS Stream is now a rolling distribution that sits upstream of RHEL, rather than a downstream rebuild of it. It is useful for tracking what is coming in RHEL, but it is not a like-for-like replacement for the old stable CentOS Linux.
• AlmaLinux and Rocky Linux are the community rebuilds that fill that gap: free, bug-for-bug RHEL-compatible, and the standard migration target for old CentOS installs.

If you are on CentOS 7 or 8, the practical move is to migrate to AlmaLinux or Rocky. Our CentOS dedicated server page covers the migration paths and all three options (Stream, AlmaLinux, Rocky) in depth.

RHEL: when paid makes sense

Red Hat Enterprise Linux is the same RPM world as Alma and Rocky, but with a paid subscription that buys certified support, a defined lifecycle, and — often the deciding factor — vendor certification for third-party enterprise software and compliance regimes. After the 2023 change to how Red Hat publishes its sources, the free AlmaLinux/Rocky rebuilds became the pragmatic choice for most, while paid RHEL remains worth it when a support SLA or an ISV certification requires it.

You can bring your own Red Hat subscription to our RHEL dedicated servers.

How to decide

1. Need certified support or ISV/compliance sign-off? RHEL.
2. In the RHEL family but don't need paid support? AlmaLinux or Rocky.
3. Want the broadest ecosystem and newest tooling? Ubuntu.
4. Want a minimal, subscription-free, stability-first base? Debian.

Deploying on Serverside

Every Serverside dedicated server supports every one of these distributions — the hardware is identical, so the OS choice is purely about the trade-offs above. Provisioning is automated and completes in under a minute, and always-on DDoS mitigation is included on our ASN 55285 network regardless of which distribution you pick.

The platform capabilities are the same whichever distribution you land on. Custom iPXE configurations let you run any distro — even ones we don't list — with your own kernels, or run the system entirely in memory, diskless. You also get plug-and-play ISO mounting with KVM console access, virtual private networking between your servers, customer-defined network DMZs, and self-service DDoS mitigation and firewall rule management.

Ready to deploy? Jump straight to the right page for your pick — Ubuntu, Debian, CentOS successors, or RHEL — or see the full dedicated server range. Running Windows instead? We have a Windows dedicated server page too.