vps It is more than a shared server and less than a dedicated server. A VPS simply put is, a server that runs inside another server. Each VPS looks, feels, and acts like a dedicated server but shares the same hardware. Think of it as a multi-tenant dwelling or luxury condo. Each apartment has it’s own private entry, locks, electric, plumbing, bathrooms, kitchen and storage area within the same larger space. There are a several companies that offer this product, such as Sphera, Ensim, and an open source project called FreeVSD. While Ensim and Sphera do not actually host anything themselves, they license their technology to many hosting companies around the world. Since my background is with Ensim I will be discussing this here.
Ensim Instant Server Technology allows a hosting provider to slice up a physical server into virtual or “private,” systems. Each private server has it’s own unique file system, disk space, user space (including virtual root), process space, CPU, bandwidth, and memory allocations:
Performance Isolation: Heavy traffic or CPU load has no affect on other private servers on the same box, but there are limits on CPU, Memory, and Process.
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