The Linux-HA (High-Availability Linux) project provides a high-availability (clustering) solution for Linux, FreeBSD, OpenBSD, Solaris and Mac OS X which promotes reliability, availability, and serviceability (RAS).
The project’s main software product is Heartbeat, a GPL-licensed portable cluster management program for high-availability clustering. Its most important features are:

no fixed maximum number of nodes - Heartbeat can be used to build large clusters as well as very simple ones
resource monitoring: resources can be automatically restarted or moved to another node on failure
fencing mechanism to remove failed nodes from the cluster
sophisticated policy-based resource management, …

SUNNYVALE, Calif. (February 14, 2008)—SGI (NASDAQ: SGIC) demonstrated continued momentum in the HPC market today with the announcement of its acquisition of the core assets of Linux Networx, Inc. and an investment in SGI by Oak Investment Partners and Lehman Brothers.
In exchange for the issuance of SGI common stock, SGI has acquired key Linux Networx software, patents, technology and expertise. Linux Networx is a recognized technology leader in the clustered HPC space and boasts a significant customer base. The acquisition is expected to advance SGI leadership in production-ready high …

Load balancing is the even distribution of computer processing and communication activities so that a server is not overwhelmed. Load balancing is especially important for networks where it is difficult to predict the number of requests that will be issued to a server.
Busy Web sites typically employ two or more Web servers in a load-balancing scheme. If one server starts to get swamped, requests are forwarded to another server with more capacity. Load balancing is therefore a service that is employed on more sophisticated site deployments.
Most service providers that offer …