VPS/VDS users get a virtual server for exclusive use. The VPS is created using a type of software, a hypervisor, which is installed onto a physical server to segment its resources. The client gets a «slice» of the resources of one physical server. When a client needs more resources, they order another virtual server.
Clients often get root access to the VPS. Root access gives users the ability to install an operating system and other software on the server. In principle, VPS users get a separate server with dedicated resources and the ability to deploy software solutions with no limitations other than the hardware configuration.
Let’s take a look at some of the benefits of having an isolated hosting environment:
- all data and services are inaccessible to other VPS users on the same host server;
- the virtual machine can be launched, rebooted and shut down independently from other users;
- the VPS is connected to the user’s local network; virtual servers can use dedicated IP addresses, routing tables etc;
- the actions of other users do not affect the resources of your virtual private server.
One of the main advantages of VDS is the price. There are VPS configurations comparable with physical dedicated servers, but more affordable. However, you won’t be able to scale the resources as the workloads increase. The growth of a business and traffic growth make it necessary to expand the IT infrastructure. The company will have to order a new VPS with another configurations and redeploy the systems.
VPS is a good solution for light workloads, such as remote desktops and collective work with office apps, deploying small e-commerce projects, corporate websites and certain types of servers (proxy, mail, monitoring, voice communication etc).
VDS is often not a good fit for tasks that take a lot of resources, such as video and audio streaming, game servers and apps with high or volatile traffic, cryptocurrency mining, large e-commerce projects etc. These uses are often prohibited by the provider’s SLA. If these prohibitions are violated, the VPS will be turned off to prevent any negative effects on other user’s virtual machines.
Some VPS providers oversell their resources. Overselling is a practice where providers sell more resources than they can actually offer at all times. This won’t affect users as long as they do not use 100% of their resources. However, peak traffic loads will inevitably slow down the virtual machines of every user on the same physical server. In these cases, clients end up paying for resources that aren’t available to them and the performance is lower than expected.
Heavy workloads on other users’ VPS can sometimes lead to failures. This can limit the bandwidth of the disk subsystem and other shared resources on the VPS. Providers control and prevent these situations as much as possible. Nonetheless, a failure on the physical server will stop all virtual servers until the host is fixed. Replacing or repairing broken equipment is the responsibility of the provider. However, in most cases, VPS clients are responsible for setting up backups.
Measures such as firewalls or DDoS protection depend on the provider. For example, SIM-Networks offers an array of data protection software for rent. We also store our servers in ISO/IEC 27001-certified data centers. This standard regulates the requirements towards security systems in data centers. If you want to learn more about VPS rental, get acquainted with this service on the SIM-Networks website.