As a result, unless you only run a single computer in each data center, it's Paramount that the network between datacenters has adequate capacity to provide the desired level of data synchronization.
This low-level area of the hardware allows you to reset a hung system, boot from a specific device (like a CD or a network boot), or get into single-user mode.
硬件的这个低级区域允许您从特定的设备（如 CD 或网络）启动重新设置挂起的系统，或允许您进入单用户模式。