What is a VPS

December 29th, 2011 by

VPS is an abbreviation of Virtual Private Server which practically means a server that looks and behave exactly as any dedicated server while in reality it shares the server hardware with other Virtual private servers. Usually a VPS as referred to as VDS which in turn is an abbreviation of “Virtual Dedicated Server”. Also a VPS can be referred to as VM which is an abbreviation of “Virtual Machine”.

VPS is considered usually as a  cheaper alternative to the dedicated server due to following reasons:

1-Hardware Consildation : it is usually much cheaper to buy 1 huge server than buying 4 smaller servers that have in total same specs as the huge server. This is the case because all servers share hardware parts that does not add any value to the performance while adding to the total price such as power supply, case and motherboard.

2- Resource Sharing: a single server is not utilized fully all the time (actually it is rarely fully utilized) ,So if we run more than one server on the same hardware other servers can use the unutilized resources of other server to boost their performance. This in turn gives the VPS an opportunity to out perform a dedicated server with same specs in some cases.

2 Comments

  1. ismael
    Posted 5 May 2014 at 7:54 am | Permalink

    But when you say 1GB or RAM for a VPS, that’s mean, 1GB shared with all virtual hosts (VMs) or dedicated to the VPS in question?

    • admin
      Posted 6 May 2014 at 11:32 am | Permalink

      No , it means that this 1GB is only dedicated to your VPS.
      in Xen you cannot oversell RAM like OpenVZ so when you get a VPS with 1GB ram this 1GB is yours even if you didnt use it(dedicated)

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