DRBD

DRBD (Distributed Replicated Block Device) is a virtual block device that is distributed across two or more machines. Combined with [Heartbeat], it should be usable in a high availability (HA) system.

Installation

Links to some guides that should help you get started:

• http://wiki.centos.org/HowTos/Ha-Drbd
• http://wiki.openvz.org/HA_cluster_with_DRBD_and_Heartbeat