Frequently asked questions
What is Simafri's VPS Ultra?
A complete KVM virtual machine, with its own kernel, guaranteed memory and a dedicated IPv4 address included, running Linux or Windows Server, on datacenter-grade hardware, with Full-Stack Assistance. See the overview.
Which projects is the VPS Ultra designed for?
Projects that call for a whole virtual machine: a kernel you tune yourself, reserved memory, a dedicated IPv4 address included, Windows Server, or direct mail sending from your own address.
Is the memory really guaranteed?
Yes. The memory of your VPS Ultra is reserved for it: it remains available to your applications at all times, whatever the activity of other servers.
Can I install Windows?
Yes. The VPS Ultra runs Windows Server, with the licence billed separately, or the Linux distribution of your choice. See Getting started.
Which Linux systems can I choose?
The distribution of your choice, for example Ubuntu, Debian, Rocky Linux or AlmaLinux: specify it when ordering.
Can I load kernel modules or set up a VPN?
Yes. The kernel of your VPS Ultra belongs to it alone: WireGuard, modules, sysctl parameters, you tune it as your project requires. See System and security.
Is the IPv4 address included?
Yes: every VPS Ultra includes its dedicated IPv4 address, which belongs to it alone, with all its ports, and its IPv6 address.
Can I send email from my server?
Yes. With your dedicated IPv4 address, direct sending is enabled on request, once your account is verified. You can also use an authenticated SMTP relay, such as the Simafri Suite relay. See Network and sending email.
Where are the servers located?
In France, in the European Union.
Is traffic limited?
No: your VPS Ultra has no monthly traffic limit.
How do backups work?
Your entire server is backed up every night, encrypted and kept off the machine for seven days. Restores are carried out on request, by our team, and you choose the night. A snapshot before an update can also be requested, free of charge. See Backups and snapshots.
Can I scale up later?
Yes, at any time. Your VPS Ultra moves up to a larger size without reinstalling, in the time it takes to reboot, and your data stays in place; the new rate applies from the date of the change. See Sizes and scaling.
What is Full-Stack Assistance?
It is the expert support included with every VPS Ultra. Describe your question or what you are seeing; we diagnose it and tell you what to do, from the operating system down to your application code. You stay in control and apply the solution at your own pace. If you would rather we act on the server ourselves, our engineers step in at an hourly rate, simply on request. See Full-Stack Assistance and hands-on intervention.
How do I pay for my VPS Ultra?
Monthly, or yearly with one month free, from the Billing section of your client area, with the payment methods shown for your country. See Billing and renewal.