> For the complete documentation index, see [llms.txt](https://docs.plenit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plenit.com/docs-en/productos/servers/concepts/glossary.md). # Glossary A quick review of the terms we use when talking about Servers. If you come across one and it’s not clear, look it up here. ### Server and resources | Term | What it is | | ------------- | ------------------------------------------------------------------------------------------------------------------ | | Server | Virtual machine (Windows or Linux) that you deploy and manage from the dashboard, on our infrastructure. | | Subscription | Unit with which you organize and bill your servers; within it you can deploy as many as you need. | | vCPU | Virtual processor core assigned to the server; it determines its computing capacity. | | RAM | Working memory; the more you have, the more processes and data the server handles at once without relying on disk. | | NVMe | Type of high-performance solid-state drive on which the servers run. | | System disk | Disk where the operating system is installed (from 60 GB). | | Data disk | Additional disk for your data; each one includes backup. | | Hot scaling | Increase CPU, RAM, or disk without reinstalling (depending on the resource). | | Pay as you go | Usage-based billing, in €/month or €/hour, with no commitment. | ### Images and software | Term | What it is | | ------------ | ------------------------------------------------------------------------------------------------------------ | | Image | Starting point of the server: the operating system and, if you choose, software already installed. | | Distribution | Official operating system ready to use (Windows Server or a Linux distribution). | | My images | Your own images, created from a configured server, to replicate the same installation. | | ISO | Custom installation image that you upload to install a system your way. | | Marketplace | Catalog of appliances and preconfigured software ready to deploy (3CX, FortiGate VM, FireboxV, Pandora FMS). | ### Networks | Term | What it is | | ------------------- | ----------------------------------------------------------------------------------------------------------------- | | Standard Network | Network with a managed Virtual Router (DNS, DHCP, gateway, NAT, and firewall); the usual option. | | VPC | Network with up to three tiers over a shared Virtual Router; the only one with Site-to-Site IPSec VPN. | | Layer 2 | Layer 2 network over VXLAN, without a Virtual Router; you manage the network stack with your VNF. | | Direct IP | Public IP assigned to the server without NAT; it usually serves as the WAN for your firewall. | | Virtual Router (VR) | Component that provides network services (DNS, DHCP, gateway, NAT, firewall) in Standard and VPC networks. | | VNF | Virtual network appliance that you deploy and operate yourself (FortiGate VM or FireboxV). | | NAT | Address translation that allows the private network to access the internet with a public IP. | | Geo-IP | Traffic filtering by country of origin, to allow or block regions. | | Firewall | Inbound and outbound rules that control network traffic. | | Load balancer | Distributes traffic among several servers to scale and balance the load. | | Super CIDR | Range of addresses that encompasses the tiers of a VPC. | | Tier | Each level of a VPC (for example, web, application, and data). | | IPSec VPN | Encrypted tunnel over VPC: Site-to-Site to connect sites, or remote access for users. | | IKEv1 / IKEv2 | VPN tunnel negotiation protocols; split tunneling requires IKEv2. | | Split tunneling | Send only traffic from certain networks through the tunnel; it creates a security association per remote network. | ### Access | Term | What it is | | -------------------- | ------------------------------------------------------------------------------------------- | | RDP (Remote Desktop) | Access to the graphical desktop of a Windows server. | | SSH | Command-line access to a Linux server, with keys managed in the panel. | | Web console | Access to the server from the panel, without going through the network; your recovery path. | ### Backups and protection | Term | What it is | | --------- | --------------------------------------------------------------------- | | Backup | Automatic, scheduled copy of your disks, with configurable retention. | | Snapshot | Manual snapshot of the entire machine at a specific moment. | | Retention | How long each copy is kept. | ### Infrastructure | Term | What it is | | --------------------------- | ------------------------------------------------------------------------------------------------------------------- | | Region | Geographic area where your servers are hosted (Madrid, Paris, Querétaro). | | Availability Zone (AZ) | Independent physical location within a region, with its own power, cooling, and network. | | VXLAN | Virtualized networking technology that creates flexible logical networks over physical infrastructure. | | Shared responsibility model | Division of tasks between us (infrastructure) and you (data, operating system, applications, network, and backups). | ### Next steps * Go back to [Concepts.](/docs-en/productos/servers/concepts.md) * Check the reference in[ ](#user-content-fn-1)[^1][Details.](/docs-en/productos/servers/details.md) [^1]: --- # Agent Instructions This documentation is published with GitBook. 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