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+drbd (Distributed Replicated Block Device)
+
+DRBD is a block device which is designed to build high availability
+clusters. This is done by mirroring a whole block device via
+(a dedicated) network. You could see it as a network RAID1. DRBD
+takes over the data, writes it to the local disk and sends it to
+the other host. On the other host, it takes it to the disk there.
+
+Starting with Linux 2.6.33, DRBD is officially integrated into the
+vanilla Linux kernel source. Besides the kernel integration, DRBD
+continues to be developed out of tree.
+
+This SlackBuild compiles the userland tools for working with DRBD.
+If you have a 2.6.33 kernel or later then you will need to ensure
+DRBD has been configured in your kernel. If you have an earlier
+kernel, then you will need the drbd-kernel package.