Chapter 10. Performance, scalability, and high availability 319
Array of Independent Disks (RAID) are available, depending on the needs. External storage
also allows you to duplicate data in different locations.
Network hardware availability can be addressed by most major vendors. Now built-in support
is available for stateful failover of firewalls, trunking of switches, and failover of routers. These
devices also support duplicate power supplies, multiple controllers, and management
devices.
10.6.3 Process high availability
Typically, process high availability is achieved by duplicating processes in a cluster or
independently in one or more servers. Keep in mind that you must be able to share and
manage the load between these processes.
In ...