VPS Virtualization
First of all it is necessary to say a few words about the virtualization VPS. Few people pay attention to it and a very good reason. In order not to go into the pros and cons of this or that, I will give only one useful tip. It is not recommended to buy VPS OpenVZ (paid its analogue Virtuozzo), but not because of this platform is something wrong. The possibility of overselling resources and its extensive use of virtualization hosters made a bad name. Do not be mistaken if I say that 70-80% VPS on OpenVZ / Virtuozoo with overselling.
For reference. Overselling (overselling) - the sale of excess resources actually available on the server. For example: on a dedicated server 2Gb memory. The physical memory is enough for 2 VPS at 1Gb, but overselling can sell 3 or 4 VPS at 1Gb. The fact that most of the time, the client does not use completely 1Gb RAM. but let's say only half on it and expect to unscrupulous hosting companies. What led these mathematical tricks when the client needs to fully 1Gb of memory, for which he paid to the word, I think not difficult to guess: brakes, errors, downtime.
Overselling hosting provider allows you to reduce the price of VPS, through the reselling of the same resource more than once. Hence, these low prices on OpenVZ VPS compared with XEN and KVM. Find out whether there is overselling on a VPS is extremely problematic without it. Here is a special case, as it is possible to do this - compare prices rates (norma: 256mb-$ 5, 512mb-$ 10, 1024mb-$ 20). Draw your own conclusions.