You said vps is green apple, vds is red apple but they are same. No. They are not same.
You are a provider and how can you say that... Ridiculous.
If your dedicated has 32gb ram, you could have 50+ 4 gb vps but you can't have up to 8 vds. So if a provider is honest ok maybe no problem for performance, but how will you know that?
Actually, no. On a server with 32Gb RAM, we would only be able to host 8 VPS's. That is because we use XEN Virtualization which does give dedicated resources.
Reference: [URLnofo]https://www.solvps.com/blog/xen-vs-openvz-comparison-performance/[/URLnofo]
This is what you are referring to as a VDS, but actually, it is a VPS.
When you think of as a VPS, is a VPS which uses OpenVZ. OpenVZ, does not give dedicated resources.
Why were they called with different names? For adding literature new words?
Pretty much, yes. Once upon a time, there was a difference. Today, there is none. When VPS's were first becoming readily available, they primarily used OpenVZ style virtualization which gave shared resources. That is why people though a VDS would be better.
In actuality, what some people refer to as a VDS is a VPS with dedicated resources.
A KVM VPS is a VPS with dedicated resources.
A XEN VPS is a VPS with dedicated resources.
The difference is in the virtualization platform used.
[URLnofo]http://www.webhostingtalk.com/showthread.php?t=616157[/URLnofo]
[URLnofo]http://www.inmotionhosting.com/support/community-support/server-usage/vps-vs-virtual-dedicated-server[/URLnofo]
If you read sources that say a VPS and a VDS are different, they either do not understand how VPS's are provisioned, or they are working without outdated data.
Now, for the sake of arguing, XEN PV can be hacked to use shared resurces, but this is not by design, rather it is the result of the host essentially hacking the kernal to do something it is not designed to do.