Watch out for the oversold methods commonly used by VPs service providers

It is understandable that any commercial enterprise wants to maximize its benefits. However, if the fire is done, it will ultimately damage your own interests. The same is true for VPs service providers. To maximize the benefits, they often use technical means to "oversell" the sold VPs ".

So what is "oversold? As the name suggests, it means "sales beyond the acceptable range ". This article will talk about the frequently-used out-of-sale methods that are well known in the industry:

 

Openvz Architecture

1. For the openvz architecture, it is easy to oversell it. Due to the characteristics of the openvz architecture, the memory and disk space allocated to you by the service provider is only a "number. For example, taking the oversold burst as an example, their openvz architecture VPs not only exclusive, but also intelligently transfers the VPs with high resource usage to the host with low resource usage.

2. Is openvz out of stock? Basically, there is no need to think about it (dividing a new vps is just a digital problem. Do you think it is not possible to oversell it ?) The amount of oversold services depends on the provider's reputation and service quality. Therefore, choosing providers with good reputation is far more practical than "cost-effective" providers.

3. Today's VPs prices are "hitting new lows", and the decline is comparable to that of the stock market. Although this is an inevitable trend with the development of the times, it is better to stay away from such an outrageous low price.

A simple example is provided:

A 16 GB memory, TB storage host, if the sale of 1 GB memory, GB hard disk openvz architecture VPs. In theory, 16 VPs can be divided at most (regardless of the consumption of the host)

The service provider does guarantee this, but the actual situation is that the 16 customers did not fully use the 16 GB memory and 1.6t storage, in fact, these 16 disks only use around 10 Gb of memory and around GB of hard disk.

From the provider's perspective: if you are a provider, will you free up the remaining 6 GB of memory and 1 TB of storage for this host? Obviously, you will continue to divide some low-configuration VPs on this host machine.

The problem is highlighted: When all VPs use almost all allocated memory during peak hours of some resources, there will certainly be insufficient memory or storage. In this case, the performance is low, unstable, and crashes.

Therefore, from the above perspective, if you choose the openvz architecture VPs, you need to consider not whether the service provider is out of stock, but whether the out-of-stock service is serious or not, and what the credibility is. After all, high-quality businesses that focus on word of mouth still exist. Even if they are sold out, they are most likely to guarantee the service quality.

Xen or KVM Architecture

1. For xen architecture, oversales still requires a certain cost. Because the characteristics of the xen architecture make it impossible for the service provider to divide new virtual machines when the host machine clearly does not have any available memory, it is necessary to reduce the cost as much as possible from other perspectives.

2. In general, since the memory of the xen architecture cannot be oversold, what should I do? Add memory! Originally, 16 GB of normal server memory was added to 32 GB, added to 64 GB, and then continue to divide the virtual machine! As a result, such a large memory monster machine appeared in the hands of VPs providers.

3. Yes. The memory is in your hands, but what about storage? What about CPU? What about bandwidth? All virtual machines must share the storage performance of the host machine? CPU time is always limited, right? Therefore, the performance of the xen virtual machine is also getting lower.

These common oversales tactics of service providers must be vigilant when choosing VPs. In summary, "normal" oversales are normal, and "Literature and Art" oversales are not terrible, what's terrible is that 2B is sold out.

Watch out for the oversold methods commonly used by VPs service providers