• DRBD is a block device which is designed to build high availability clusters
  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 raid-1. What is the scope of drbd, what else do I need to build a HA cluster? 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. The other components needed are a cluster membership service, which is supposed to be heartbeat, and some kind of application that works on top of a block device. Examples: A filesystem & fsck. A journaling FS. A database with recovery capabilities.
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• HomePage: Linux HA
  The basic goal of the High Availability Linux project is to: Provide a high availability (clustering) solution for Linux which promotes reliability, availability, and serviceability (RAS) through a community development effort. The Linux-HA project is a widely used and important component in many interesting High Availability solutions, and ranks as among the best HA software packages for any platform. We estimate that we currently have more than thirty thousand installations up in mission-critical uses in the real world since 1999. Interest in this project continues to grow. These web pages are average nearly 20000 hits per day, and we see more than 100 downloads of Heartbeat per day.
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• Products :: BalaBit IT KFT ::
  If you need a system logger whichguarantees availability of logs,is compatible with a wide variety of platforms,can be used in heavily firewalled environments,offers proven robustness,and allows you to manage audit trails with unprecedented flexibility
  Syslog-ng embodies the next generation of logging systems, and is the first truely flexible and scalable system logging application.
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• Test Center review: Always-on virtualization | InfoWorld | Review | 2008-09-03 | By Logan G. Harbaugh
  We examine five products that marry high availability and disaster recovery to your virtual server environment
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