Sybase failover allows you to configure two Adaptive Servers as companions. If the primary companion fails, the devices, databases, and connections for that server can be taken over by the secondary companion.

You can configure a high availability system either asymmetrically or symmetrically:

In either setup, the two machines are configured for dual access, which makes the disks visible and accessible to both machines.You can enable failover in jConnect and connect a client application to an Adaptive Server configured for failover. If the primary server fails over to the secondary server, the client application also automatically switches to the second server and reestablishes network connections.

NoteRefer to Adaptive Server Enterprise Using Sybase Failover in High Availability Systems Manual for Adaptive Server for more detailed information.