OS virtualization is a technology that enable multiple copies of guest OS to run on top of a host OS. Why do we wanna do this? - partition resources to share across multiple guest OS (current hardware to run multiple light guest OS. e.g. FreeBSD & Linux) - enhance security (guest OS are isolated and thus hacking into a guest OS leaves other OS safe) - saves power & money (hosting rack space & powe
![FreeBSD - How to setup & configure jail with ezjail](https://cdn-ak-scissors.b.st-hatena.com/image/square/e044447c27709ec3c6f9b1dd5fde5551539dc512/height=288;version=1;width=512/https%3A%2F%2Fblogger.googleusercontent.com%2Fimg%2Fb%2FR29vZ2xl%2FAVvXsEgwdbJF4RGd0lsZsEySFl_UplhxeyvT7wXvewUTXQMhTlkfhDks1_dWmPHdPsgJAC_QBjfB3lRCaBo7IhADC-4s_aFHzsRJGFNbuOEnO7Js54iKMD616FHoMSXkhgMC1HuXMtRLOiR8CS4L%2Fw1200-h630-p-k-no-nu%2Fezjail-logo.png)