Dedicated Servers | Windows & Linux Hosting Dedicated Servers- Are They Worth The Extra | Page 16

Redundancy
In any business application you will want build in redundancy so that if in the unlikely event that
hardware should fail it will automatically switch over to another server seamlessly and without any
loss of data. But that is not so easily accomplished with virtual servers. In order to migrate the virtual
servers from a failing server automatically to another standby server requires that they are on the same
IP subnet – unless of course your service provider is deploying software defined networking
techniques such as layer-2 overlays. However using simple high-availability techniques that have been
around and battle-tested for decades means supporting hardware and network failures means
defending against failure for dedicated servers is relatively simple.