This package provides the RAID 1 over TCP/IP modules for the Linux kernel version 2.6.30 on all 64bit single- and multiprocessor AMD and Intel machines. . Drbd is a block device which is designed to build high availability clusters by providing a virtual shared device which keeps disks in nodes synchronised using TCP/IP. This simulates RAID 1 but avoiding the use of uncommon hardware (shared SCSI buses or Fibre Channel). It is currently limited to fail-over HA clusters.