Since 2009, we’ve focused on reliable VPS hosting—starting with Virtuozzo containers and later moving to KVM virtual machines managed via Virtualizor. For years, each VM lived on an individual server with local RAID, limiting flexibility and resilience.
In September 2025, we upgraded to Proxmox backed by Ceph. Proxmox brings advanced orchestration and built-in cluster management, while Ceph’s distributed storage removes the need for node-level RAID. Together they create a high-availability environment, allowing VMs to migrate easily and stay online even when hardware fails. Unlike single-node setups, this approach scales cleanly and heals itself automatically. This shift coincided with our third-generation General Purpose VMs (GP3), powered by AMD EPYC 9474F processors — and prepared the foundation for our third-generation Windows VPS (WGP3) lineup based on the same clustered architecture.
With this platform change, we also reviewed and formalized our VPS policies. Some principles have guided us for years, while others are newly introduced to match the capabilities of clustered infrastructure. At a high level, they fall into five areas:
Compute
In VPS hosting, CPU resources are always shared, but the level of oversubscription makes a real difference. We keep ratios below industry norms and monitor utilization closely. For the GP3 lineup, physical core to vCore oversubscription is capped at 1:5, and memory is never oversubscribed.
When CPU load on a node rises, we rebalance workloads—migrating heavier virtual machines to newly added nodes to maintain consistent performance across the cluster. Looking ahead, we plan to introduce a Virtual Dedicated Server (VDS) lineup with one vCPU pinned to one physical core, to ensure maximum speed for every VM.
Storage and Backup Policies
Ceph provides distributed, self-healing NVMe storage across clusters. VM disks are replicated across nodes, so workloads stay online even if a server or drive fails — something single-node RAID cannot guarantee. Capacity can expand seamlessly as new nodes are added, with Ceph balancing data automatically. Snapshots and backups are already used internally and will be available to customers from November 2025. Additionally, VMs are replicated to another location for DR purposes.
Networking
Clusters use a modern leaf–spine fabric and ensure high bandwidth for both public and internal traffic. This architecture enables low-latency, non-blocking connectivity between all nodes and scales cleanly as capacity grows. More detail on our networking approach will follow in dedicated posts.
Security
Security is embedded in cluster design. Active DDoS protection is handled outside our network in partnership with NextHop, while firewalls at each VM boundary add isolation beyond perimeter filtering. We are also evaluating AMD’s SEV-ES technology, which encrypts VM state directly on the CPU, as a potential third layer of defense if it meets our performance targets.
Flexibility
Each VPS family runs on its own standardized cluster, tailored for its needs — General Purpose, Windows, Value (planned), and future Virtual Dedicated Servers. Our API streamlines provisioning and lifecycle management of VM fleets, with new features in development.
Looking Ahead
We are modernizing our infrastructure across the board, moving to clustered designs that remain fast, resilient, and optimized for diverse workloads. New VPS families, ultrafast dedicated virtual servers, and steady feature improvements are all part of this direction.
This blog post opens a series where we share the VPS policies and thinking behind our platform. It also coincides with the launch of our redesigned VPS page — a fresh, enterprise-grade presentation of the services we have built. Both efforts reflect the same commitment: keeping our systems modern, transparent, and built to last.
Read on as we describe the GP3 and soon after the Windows GP3 VPS clusters — our third generation of General Purpose VMs — and the specific policies that guide them.
Fredrik Rovik
CEO & Founder, ServeTheWorld
Next article: Introducing GP3: ServeTheWorld’s New Generation of General Purpose VPS