"Dell Community Repositories Your Dell PowerEdge systems can be managed using the yum utility that already manages packages for Red Hat Enterprise Linux 5.3 on your nodes. This provides easy access to any Dell provided Linux software, Dell PowerEdge firmware updates, some DKMS drivers, and other open source software. For more information, visit linux.dell.com/repo/community/ If your nodes do not have access to the internet, skip this section and perform manual firmware updates and software installation to your PowerEdge systems as needed. Visit support.dell.com for information. NOTE: The repositories are community supported, and not officially supported by Dell. Use the linux-poweredge mailing list on lists.us.dell.com for repository support. "
he following will install and configure DRBD, OpenAIS, Pacemaker and Xen on OpenSUSE 11.1 to provide highly-available virtual machines. This setup does not utilize Xen's live migration capabilities. Instead, VMs will be started on the secondary node as soon as failure of the primary is detected. Xen virtual disk images are replicated between nodes using DRBD and all services on the cluster will be managed by OpenAIS and Pacemaker. The following setup utilizes DRBD 8.3.2 and Pacemaker 1.0.4. It is important to note that DRBD 8.3.2 has come a long way since previous versions in terms of compatibility with Pacemaker. In particular, a new DRBD OCF resource agent script and new DRBD-level resource fencing features. This configuration will not work with older releases of DRBD.
Red Hat Cluster Suite is a collection of technologies working together to provide data integrity and the ability to maintain application availability in the event of a failure. Administrators can deploy enterprise cluster solutions using a combination of hardware redundancy along with the failover and load-balancing technologies in Red Hat Cluster Suite.
LinBit's system for mirroring filesystems across the Network, typically a dedicated LAN, written by Philipp Reisner and LarsEllenberg. This is the general replication technology which is most commonly used by members of by the Linux-HA community. By the w
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.