SurfRAID TRITON 16Ni, Руководство пользователя

Страница: 219 / 248

11.2.1 Hardware Aspect
Active server: proNAS HA server that performs cluster-protected operations.
Backup (Standby) server: proNAS HA server that can takeover the critical operations of an active
server when the active server is down or unavailable.
Private net: Private net is a dedicated channel for servers to exchange their operating status (i.e.,
heartbeat message).
Types of Private Net Available:
TCP/IP socket: Ethernet network running TCP/IP protocol. Each server must install a
dedicated IP to attach to the private net.
RS-232 serial port: One free serial port per server. A null modem cable must be installed to
connect the serial ports of the two servers.
Public net: Public net is the paths for networked clients to access cluster- protected resources.
Network Configuration for High Availability Pair
The following diagram illustrates the network configuration for a High Availability pair:
Multi Port Switch
Public Net Private Net Private Net Public Net
RS232 Serial Port
Active Server proNAS HA Resource Backup Server
Virtual IP