drbd

drbd is software (Private) that allows Linux (Private) systems to replicate block device data between two or more networked devices.

Components

drbd is comprised of both a kernel module and a series of user-space applications:

• drbd-overview provides an overview of all dbrd devices' replication states.
• drbdadm is the high-level administrative tool, which usually drives drbdsetup and drbdmeta.
• drbdsetup configures the kernel module.
• drbdmeta manages on-disk metadata.