Change is a good thing. Unfortunately, when you are making big changes to your site or application, there is always room for error. Live-state snapshots takes the idea of a "backup" and brings it forward to its next logical step. Taking a snapshot of your partition not only creates a backup of your files, but also all of the processes running in the background at that instant in time. This way, if you make an error or break something while making updates, you can revert your partition to that exact snapshot, providing a working, fail-safe rollback.
If the plan looks good, check the experience and responsiveness of the support staff. The server could be cheap because the provider doesn’t hire enough support staff or pay well enough to attract top talent. Finally, check to be sure the plan is truly cloud or VPS hosting and not shared hosting disguised by marketing hype. The attributes we have described above should help you detect any impostors. The host below consistently delivers value to hosting customers, and its cloud VPS plans are no exception.
Rather than being hosted on one single instances of a physical server, hosting is delivered on a virtual partition which draws its resource, such as disk space, from an extensive network of underlying physical servers. If one server goes offline it will have no effect on availability, as the virtual servers will continue to pull resource from the remaining network of servers. 
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