Enterprise vServer | HA cluster automatic failover | KeverHosting
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High-availability cluster

Enterprise vServer

Cluster with distributed NVMe storage and automatic failover: the instance restarts on a healthy node if a host fails — with no reinstall on your side.

  • Failover in ~9 seconds
  • Distributed NVMe
  • 320 Gbit/s DDoS
  • 99.99% availability

Enterprise vServer: available configurations

Configurations intended for services where downtime carries a direct cost on the business.

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Payment period

No setup fees

EnterMicro

€31.89/month
  • vCPU 2
  • RAM 1GB
  • Disk 20GB

Linux*

Order

EnterSmall

€53.49/month
  • vCPU 2
  • RAM 2GB
  • Disk 40GB

Linux*

Order

EnterBasic

€75.89/month
  • vCPU 4
  • RAM 4GB
  • Disk 60GB

Windows & Linux

Order
Best Choice

EnterLarge

€109.59/month
  • vCPU 4
  • RAM 8GB
  • Disk 100GB

Windows & Linux

Order

EnterElite

€165.29/month
  • vCPU 8
  • RAM 16GB
  • Disk 180GB

Windows & Linux

Order
  • In every plan
  • 1 Gbit/s
  • NVMe HA
  • root/Administrator access
  • VNC console
  • Automatic failover
* Windows OS is not available for plans that do not meet the minimum system requirements.

How the cluster reacts to the loss of a node

Redundancy is not a contractual option: it is how the platform is built.

Automatic fault detection

Cluster nodes monitor each other. When a host stops responding, the quorum declares it unavailable without waiting for human intervention.

Restart on a healthy node

Because volumes reside on distributed storage rather than on the disks of a single host, the instance restarts on another node in the same availability zone with data state intact.

No reinstallation on your side

Recovery happens at infrastructure level: configuration, addressing and content remain unchanged, with an interruption in the order of seconds.

Available operating systems

Linux and Windows (BYOL) images distributed across the nodes of the high-availability cluster.

Ubuntu

Ubuntu

22.04 / 24.04 LTS
Debian

Debian

11 / 12
AlmaLinux

AlmaLinux

8 / 9
Rocky Linux

Rocky Linux

8 / 9
CentOS

CentOS

Stream 9
Fedora

Fedora

Server
Alpine Linux

Alpine Linux

3.19 / 3.20
Windows

Windows

2019 / 2022 BYOL
Further distributions and versions can be selected at deploy time.

Characteristics of the Enterprise platform

The elements designed to keep the service running even in the presence of hardware faults.

Cluster of at least three nodes

AMD Ryzen 9 5950X hosts or higher. A quorum across three nodes allows unambiguous failover decisions.

Distributed NVMe storage

Volumes do not reside on the disks of a single host: losing a node does not mean losing access to data.

Automatic instance restart

Detection and restart on a healthy node in the order of nine seconds, with no reinstallation and no address change.

Planned live migration

Host maintenance is carried out by moving running instances, without agreed downtime windows.

320 Gbit/s DDoS mitigation

The highest filtering level in our portfolio, applied at the network edge of the cluster.

1 Gbit/s guaranteed bandwidth

Reserved rather than best-effort capacity: predictable throughput for business applications and databases.

Day-to-day operation from the panel

Routine operations remain identical to a single instance, with the remote console always available.

Nodes distributed across the EU

Cluster nodes are distributed across multiple European sites, in favour of service continuity.

Specifications of the Enterprise platform

Select a category to review cluster parameters, beyond the resources of the individual plan.

Host CPU AMD Ryzen™ 9 5950X or higher
Nodes are homogeneous in compute capacity: any host in the cluster can take over the load of the others.
Host memory DDR4 ECC 2666 MHz or higher
Storage NVMe distributed across the cluster
Volumes are replicated between nodes: data access does not depend on the disks of a single host.
Cluster nodes Three at minimum
Three hosts are the minimum required to establish a quorum and decide failover without ambiguity.
Geographical distribution Multiple European sites
Virtualization KVM on a high-availability cluster
Bandwidth 1 Gbit/s guaranteed
Capacity reserved for the instance rather than shared on a best-effort basis.
Included traffic Unmetered under fair use
DDoS mitigation Up to 320 Gbit/s
The highest filtering level in our portfolio, applied at the network edge of the cluster.
IPv4 1 included, up to 16
IPv6 Optional, up to 16
Failover Automatic, about 9 seconds
The interval between declaring a node unavailable and restarting the instance on a healthy host.
Live migration Supported
Allows scheduled host maintenance without service downtime.
Data recovery At infrastructure level
No reinstallation on your side: configuration and content remain unchanged.
Remote console KVM over IP
Reinstallation Self-service from the panel
Privileges Root or Administrator
Resource allocation Exclusive CPU, memory and disk
Availability 99.99% on a monthly basis
Equivalent to a downtime allowance of less than five minutes per month.
Support Ticket, continuous oversight
Cancellation Unused months refunded

Options you can add to the plan

Features that are not part of every deployment and are enabled only where they are actually needed.

Scheduled backup and snapshots

Periodic copies kept on separate storage, plus point-in-time snapshots taken before maintenance work. Restores are handled on request.

Optional

Additional IPv4 addresses

Up to sixteen public addresses per instance, for separating exposed services, dedicated certificates or reverse proxy setups.

Up to 16 IPs

IPv6 dual stack

IPv6 connectivity alongside the IPv4 address, for applications that have to be reachable over both protocols.

Power and Enterprise

Windows Server licence (BYOL)

Windows images run under a bring-your-own-licence model: you keep the licences you already hold, we handle the image.

BYOL

Options can be selected while ordering or enabled later from the panel. For configurations that are not listed, talk to our team.

Frequently asked questions about Enterprise vServer

The remaining nodes detect the absence of response and declare the host unavailable. The instance is restarted on a healthy node in the same availability zone, with volumes already present on distributed storage. The interruption is in the order of nine seconds.
Power optimizes single-node performance, with local NVMe and a 1 Gbit/s uplink (up to 10 Gbit/s). Enterprise optimizes continuity: distributed storage, redundancy across hosts, guaranteed bandwidth and stated availability of 99.99%.
Yes. Replicated storage, ECC memory and automatic restart address the typical requirements of databases and business applications in operation.
No. The procedure is automatic and operates at infrastructure level: no reinstallation or reconfiguration of the instance is required.

A project under SLA? Let us define requirements and sizing together

Contact us

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Viale delle rimembranze 33,
21052 Busto Arsizio (VA)

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