vCore (vCPU)
Virtual processor: a fraction of a physical core allocated to your VPS. The underlying physical core's frequency (up to 5.7 GHz on our Ryzen 9) determines real performance — not all vCores are equal.
VPS- og hostingordliste — 32 begreber forklaret
VPS-hostingens ordforråd, forklaret af ingeniører — uden unødigt jargon.
Definitioner skrevet på fransk og engelsk.
NVMe
Storage protocol designed for flash memory, using PCI Express directly instead of the SATA legacy. Divides latency by ten compared to classic SATA SSDs.
NVMe Gen4
Fourth generation of the PCIe link for storage: up to 7 GB/s reads and over one million IOPS — double Gen3.
IOPS
Input/output operations per second. Key metric for databases: the higher the IOPS, the faster random reads/writes.
KVM
Kernel-based Virtual Machine: the hardware virtualization built into the Linux kernel that we use. Complete isolation, access to modern CPU instructions (AVX-512), no slow software layer.
Hyperviseur
Software hosting several VPS on a physical server. With us, hypervisors are never oversold: sold resources are guaranteed.
Bande passante
Maximum throughput of your VPS network link — 10 Gbps with us, i.e. 1.25 GB/s theoretical. Beware of "unlimited" offers on 100 shared Mbps elsewhere.
Latence (ping)
Round-trip time of a network packet, in milliseconds. Critical for gaming, trading and real-time applications. 4 ms between Paris and our PAR-1 site.
Attaque DDoS
Deliberate saturation of a server by a packet flood. Our in-house three-layer mitigation absorbs attacks in under a second.
Peering
Direct interconnection between networks at an exchange point (IX). The more peerings a host has, the shorter paths your traffic takes. We maintain 1,400+.
IX (Internet Exchange)
Exchange point where networks interconnect: DE-CIX (Frankfurt), France-IX (Paris), AMS-IX, LINX, NYIIX, SGIX. We're present at all six.
Accès root
Full administrator control of your server: install any software, modify the kernel, configure networking. Included in all our plans.
IPv4 dédiée
IP address exclusive to your VPS, no sharing: clean reputation for email sending and whitelisting APIs. Included in every plan.
Uptime / disponibilité
Percentage of time the service is reachable. 99.99% = less than 53 minutes of interruption per year. Our SLA guarantees it contractually.
SLA
Service Level Agreement: contractual availability commitment with automatic credits if missed — from 10% to 100% of the monthly fee with us.
DDR5 ECC
Latest-generation RAM: double DDR4 bandwidth and built-in error correction (ECC) against data corruption.
AMD EPYC
AMD's server processors: up to 32 cores per socket and 12 memory channels. Power our Quantum and Singularity plans for parallel workloads.
AMD Ryzen 9
Very high-frequency processors (5.7 GHz boost). The best choice for single-threaded apps: games, PHP, serialized databases. Apex and Titan plans.
Snapshot
Instant hypervisor-level photograph of your disk. One-click restore before a risky update.
Provisioning
Automated creation of your VPS: resource allocation, OS installation, IP assignment. With us: 55 seconds on average.
SSH
Secure Shell: encrypted remote administration protocol. Ed25519 keys recommended, custom port and Fail2ban — see our hardening guide.
Docker
Application containerization: packaging an app and its dependencies into a portable unit. Runs perfectly on our VPS (cgroups v2, overlay2).
Reverse proxy
Frontend server (Nginx, Traefik, Caddy) routing traffic to your applications and handling HTTPS. A central component of any web production.
TTFB
Time To First Byte: time before the first response byte. The web's queen metric — under 200 ms on a well-hosted WordPress.
WireGuard
Modern VPN built into the Linux kernel: 4,000 lines of code, ChaCha20, 900+ Mbps on our VPS. OpenVPN's official successor.
Fail2ban
Tool that automatically bans IPs after repeated authentication failures (SSH, mail, web). First line of defense for an exposed VPS.
UFW
Uncomplicated Firewall: simple iptables/nftables interface on Ubuntu. `ufw allow 22/tcp` and you're done.
CDN
Content Delivery Network: geographically distributed caches for your static assets. An ideal complement to a well-placed VPS, not a substitute.
RGPD / GDPR
European personal data regulation. Hosting in the EU (Paris, Frankfurt, Amsterdam) simplifies compliance — no transfers outside the EU.
RAID
Disk redundancy. Our hypervisors use hardware RAID 10: a disk failure never affects your VPS.
Overselling (survente)
Selling more resources than the server has, betting everyone won't consume at once. Common low-cost practice — banned with us.
cgroups
Kernel mechanism limiting CPU/memory/IO per process. What guarantees your VPS's isolation and powers Docker.