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Replication

This is a useful technology both for Disaster Recovery and for shared storage elimination. Currently, Linux has two candidates for providing replication: md/nbd which places a RAID-1 mirror over a network block device[6] and is available in the kernel today and drbd which is available as a separate package[7].

Some of the cluster packages listed in the appendix can make use of replication for shared storage replacement.



James Bottomley 2004-05-12