rain technology
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23-03-2010, 10:05 AM

send me the report on RAIN TECHNOLOGY
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05-06-2010, 05:09 PM

hey please read topicideashow-to-rain-random-array-of-independent-nodes for getting more information of RAIN (random array of independent nodes) technology
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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12-10-2010, 11:35 PM

plz send me more information about the rain technology topic
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28-02-2013, 12:17 PM

RAIN Technology

.docx   RAIN.docx (Size: 16.69 KB / Downloads: 12)


Rainfinity's technology originated in a research project and implimentation at the California Institute of Technology (Caltech), in collaboration with NASA's Jet Propulsion Laboratory and the Defense Advanced Research Projects Agency (DARPA). The name of the original research project and implimentation was RAIN, which stands for Reliable Array of Independent Nodes. The goal of the RAIN project and implimentation was to identify key software building blocks for creating reliable distributed applications using off-the-shelf hardware. The focus of the research was on high-performance, fault-tolerant and portable clustering technology for space-borne computing. Two important assumptions were made, and these two assumptions reflect the differentiations between RAIN and a number of existing solutions both in the industry and in academia:

1) The most general share-nothing model is assumed. There is no shared storage accessible from all computing nodes. The only way for the computing nodes to share state is to communicate via a network. This differentiates RAIN technology from existing back-end server clustering solutions such as SUNcluster, HP MC Serviceguard or Microsoft Cluster Server.

2) The distributed application is not an isolated system. The distributed protocols interact closely with existing networking protocols so that a RAIN cluster is able to interact with the environment.Specifically, technological modules were created to handle high-volume network-based transactions.

In short, the RAIN project and implimentation intended to marry distributed computing with networking protocols. It became obvious that RAIN technology was well-suited for Internet applications. During the RAIN project and implimentation, key components were built to fulfill this vision. A patent was filed and granted for the RAIN technology. Rainfinity was spun off from Caltech in 1998, and the company has exclusive intellectual property rights to the RAIN technology. After the formation of the company, the RAIN technology has been further augmented and additional patents have been filed.

"Its Architecture"

The RAIN technology incorporates a number of unique innovations as its core modules:
Reliable transport ensures the reliable communication between the nodes in the cluster. This transport has a built-in acknowledgement scheme that ensures reliable packet delivery. It transparently uses all available network links to reach the destination. When it fails to do so, it alerts the upper layer, therefore functioning as a failure detector. Thismodule is portable to different computer platforms, operating systems and networking environments.
Consistent global state sharing protocol provides consistent group membership, optimized information distribution and distributed group-decision making for a RAIN cluster. This module is at the core of a RAIN cluster. . It enables efficient group communication among the computing nodes, and ensures that they operate together without conflict.

Always-On-IP maintains pools of "always-available" virtual IPs. These virtual IPs are logical addresses that can move from one node to another for load sharing or fail-over. Usually a pool of virtual IPs is created for each subnet that the RAIN cluster is connected to. A pool can consist of one or more virtual IPs. Always-On-IP guarantees that all virtual IP addresses representing the cluster are available as long as at least one node in the cluster is operational. In other words, when a physical node fails in the cluster, its virtual IP will be taken over by another healthy node in the cluster.

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