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hpux 10.20 - vgchange (1) High Availability Cluster Overview Volume groups can be defined on disk volumes that are connected to two or more systems in a high availability cluster. The volume group must be marked as part of a high availability cluster and marked sharable, otherwise, the volume group is not activated. The volume group must be marked as part of a high availability cluster, and the availability software must be running on the system; otherwise, the volume group is not activated. www.cs.bgu.ac.il /~arik/usail/man/hpux/vgchange.1.html   (1578 words)

High Availability [Cluster] For information on how a server cluster implements a high-availability environment, see Server Cluster Implementation. A highly available resource is available a very high percentage of the time and may even approach 100% availability, but a small percentage of down time is acceptable and expected. Server clusters are designed to keep resources (such as applications, disks, and file shares) highly available. msdn.microsoft.com /library/en-us/mscs/mscs/high_availability.asp?frame=true   (208 words)

iqexpand.com A cluster of computers is referred to as a server farm when the computers are used to mimic the operations of a single server machine. LVS clusters are a form of director-based clusters that allow incoming requests for services to be distributed across multiple cluster nodes. The central concept of a Beowulf cluster is using COTS machines to produce a cost-effective alternative to a traditional supercomputer. cluster_computing.iqexpand.com   (1004 words)

High Availability The High Availability Linux Project: Linux-HA is the home of "heartbeat," the high availability code that can be used by itself, but is also implemented by various load sharing and balancing cluster software. Linux Replicated High Availability Manager: The Linux Replicated High Availablity Manager tries to offer a solution for Linux, based on ENBD, similar to what the author had previously developed on the Solaris platform using shared SCSI disks and Veritas Volume Manager. Cluster Suite is comprised of two main parts, Cluster Manager, which provides application failover, and IP Load Balancing (formerly known as Piranha), which provides the ability to load balance IP traffic across a farm of servers. lcic.org /ha.html   (771 words)

O'Reilly Network -- Building a High-Availability MySQL Cluster Secondly, this article is about building a truly available MySQL cluster, which means it focuses on high availability, not on high throughput. With this cluster environment, I built a highly redundant environment. Later, many people tried to create a replication environment that implemented high availability. www.oreillynet.com /pub/a/databases/2006/02/16/ha_mysql_cluster.html   (658 words)

NOVELL: Cool Solutions: Novell Identity Manager High Availability Cluster on SUSE Linux NOVELL: Cool Solutions: Novell Identity Manager High Availability Cluster on SUSE Linux The Heartbeat software runs on two or more servers and provides a mechanism for automatically stopping and starting other software (resources) based on the availability of the cluster machines. The services hosted by the cluster may be monitored for failure and, in case of failure, the services can be restarted or the cluster services can be moved to the secondary node. www.novell.com /coolsolutions/feature/1634.html   (262 words)

IBM Clusters - High Availability Cluster Multiprocessing Best Practices The IBM High Availability Cluster Multiprocessing (HACMP™) product supports a wide variety of configurations, and provides the cluster administrator with a great deal of flexibility. This document discusses the choices that the cluster designer can make, and suggests the alternatives that make for the highest level of availability. With this flexibility comes the responsibility to make wise choices: there are many cluster configurations that are workable in the sense that the cluster will pass verification and come on line, but which are not optimum in terms of providing availability. www-03.ibm.com /servers/eserver/clusters/whitepapers/hacmp_bestpractices.html   (98 words)

High Availability Cluster (HAC) Service Packs High Availability Cluster (HAC) Service Packs incorporate Sun's unique life cycle approach to availability management and include the IT service management know-how you need to help gain increased control of your IT operations, attain predictable service levels and minimize total cost of ownership (TCO). The HAC Service Packs include the following service combinations in addition to the core services of the HA Service Pack: Cluster Implementation Service, Sun Cluster Software Installation, Sun Cluster License support and HA Agent support. To learn more about HAC Service Packs for Sun Fire servers please complete this form and a Sun representative will contact you. www.sun.com /service/hapacks/hac.html   (148 words)

Business Wire: Legato Introduces Industry Firsts for High Avai... @ HighBeam Research Legato is the first company to offer a high availability clustering solution with support for Solaris 7 and 8 on Intel and Sparc platforms. Legato Cluster is also uniquely suited to protect and optimize application and service level availability within SAN, ecommerce, ASP, and other typically heterogeneous environments. Legato's new cluster module for Oracle is the first to make Oracle simpler to manage, providing a new console designed specifically to automate and control multiple instances of Oracle across the data center. www.highbeam.com /library/doc0.asp?docid=1G1:70877095&refid=ink_tptd_np   (781 words)

High Availability Cluster Checklist In a cluster environment, preserving the integrity of the data is of paramount importance and supersedes even data availability. The diagram in Figure 1 depicts a two-node cluster (I am using a two-node cluster for simplicity, the concepts apply to clusters composed of more than two nodes as well) with cluster members A and B connected to a shared SCSI bus with Disk 1. The upshot of all this is that the cluster implementation you choose must ensure that an individual file system or database can only be served by a single cluster member at any point in time--pretty simple, if you can find a cluster product that does this in all cases. www.linuxjournal.com /node/4344/print   (2553 words)

Digital's Internet High Availability Cluster Solutions Deliver Superior Performance and Scalability From start-up platforms to enterprise-scale systems, customers can choose a high availability cluster solution that matches their needs today and allows for future growth. Pricing and Availability A base package of the Digital Internet High Availability Cluster Solution, based on the Digital AlphaServer 1000A, is available from Digital and its business partners. For investment protection, the Internet High Availability Solutions running on the AlphaServer platforms provide users with the freedom to migrate from DIGITAL UNIX to Windows NT without sacrificing their hardware investment. www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/8-19-97/300968&EDATE=   (797 words)

Sybase Inc - ASE and Cluster/High Availability Information Certification Information for ASE and Cluster/High Availability Information Sybase Inc - ASE and Cluster/High Availability Information Sybase High Availability for HACMP 4.4.1 is supported with HA option. www.sybase.com /detail?id=1033635   (826 words)

TerraServer Bricks, A High Availability Cluster Alternative - from Only4Gurus.com Later, we focused on high availability by migrating to an active/passive cluster connected to an 18 terabyte Storage Area Network (SAN) provided by Compaq Computer Corporation [Barclay04]. Our goal is to operate the popular TerraServer web site with the same or higher availability than the TerraServer SAN at a fraction of the system and operations cost. In November 2003, we replaced the SAN cluster with a duplexed set of "whitebox" PCs containing arrays of large, low-cost, Serial ATA disks which we dub TerraServer Bricks. www.only4gurus.com /v3/preview.asp?ID=7058   (318 words)

Chapter 1. High Availability Cluster/iX  This guide documents the High Availability Cluster/iX utility for the HP e3000 systems. Once installed, the Cluster/iX utility provides continued access to data on high availability disk array products like the SureStore E Disk Array XP256, XP48, XP512, VA7100 and any other supported dual-ported arrays. All of HP US High Availability Cluster/iX User's Manual docs.hp.com /en/B9480-90003/ch01.html   (113 words)

High Availability The Built On IBM Express Portfolio trademark recently awarded to High-Availability, acts as a quality stamp of approval by IBM as a sign of their confidence in... RSF-1 keeps Salford University student information system up and running Running a dual Sun V880 cluster for its Banner student information system, Salford Un... HAC recently attended the 3 day SEUG06 (SCT Banner) conference, held at Leeds University. www.high-availability.com   (118 words)

IBM Redbooks Implementing High Availability Cluster Multi-Processing (HACMP) Cookbook If you plan to install, migrate, or merely administer a high availability cluster, this book is right for you. He is involved in various cluster and storage implementation projects in Slovenia and in CEE countries. This book will be especially useful for system administrators currently running both HACMP/ES and HACMP Extended Distance (XD) clusters who may want to consolidate their environment and move to a new HACMP V5.3. www.redbooks.ibm.com /abstracts/sg246769.html   (918 words)

High-availability Linux cluster technology goes GPL The demonstration incorporates a high-availability Kimberlite cluster serving a multi-terabyte DVD storage subsystem. The Company's portfolio includes the innovative open source Kimberlite high-availability cluster technology, its unique Web-enabled diagnostic and system management solutions, Linux kernel enhancements, advanced technology training, and deep engineering expertise across all major Linux distributions and heterogeneous environments. "Issues concerning availability and data integrity will no longer be a roadblock to wide-scale acceptance of Linux in the high-end server market," said Moiz Kohari, President and CEO of Mission Critical Linux. www.linuxdevices.com /news/NS8641600199.html   (500 words)

Extending MSCS Cluster High Availability Offsite, from XOSoft - White Papers, Webcasts, and Case Studies - ITPapers Overview: Extending your MSCS cluster offsite with a cluster aware high availability solution will close the gap in protection left open by MSCS shared storage clusters. Extending MSCS Cluster High Availability Offsite, from XOSoft - White Papers, Webcasts, and Case Studies - ITPapers Depending on your specific requirements "offsite" can be 10 miles, 200 miles, 1000 miles or even further. www.itpapers.com /abstract.aspx?docid=163465   (267 words)

High Availability cluster software Florence, ITALY -- Architek announces Felis Server, the first High Availability Cluster software solution, available for Linux, BSDI & FreeBSD in addition to Solaris and others. Its name Architek is derived from Architecture & Teknologia, and aims to express this role: Architek's mission is to offer High Availability-Cluster software for critical networking and storage applications, where downtime is not an option. The Felis Cluster family offers different HA architecture solutions: Felis Server, for Storage; Felis HotPfw, for Firewall or transparent IP gateway module applications; and Felis HotHA for customized embedded/OEM designs. www.linuxdevices.com /news/NS4813823099   (306 words)

IBM High-Availability Cluster Multiprocessing - Utilities Shopping at dooyoo.co.uk High Availability Cluster Multi-Processing (HACMP) software permits clustering of RS/6000 systems... HACMP also enables hardware and software upgrades without interrupting cluster operations. HACMP is designed to keep business critical applications and systems operational with minimum downtime. dooyoo.co.uk /utilities/ibm-high-availability-cluster-multiprocessing   (133 words)

High availability and Heartbeat Heartbeat arose from the Heart project in 1999 and is one of the foundational technologies of the High Availability Linux Project. The version of Heartbeat available today is a stable and effective way of ensuring that two nodes in a cluster act in a coordinated manner. Dependencies, otherwise called "constraints" are important, as you might never want database servers to run on the same node as Web servers, or you might want to always have data replication services run only on nodes that are running the database services. www.networkworld.com /columnists/2005/061305gearhead.html   (1085 words)

PizzaExpress Secures More than 300 Restaurants and Headquarters' Operations with Fortinet's FortiGate™ Systems To secure its ADSL-based WAN linking its headquarters and restaurants, PizzaExpress is using FortiGate-300 enterprise-class systems in a high-availability cluster at its head office in Uxbridge, UK and has begun deploying FortiGate-50A systems in each of its more than 300 restaurants throughout the UK and Ireland. Information technology (IT) plays an essential role in providing PizzaExpress' high level of service to 16 million customers who visit its restaurants annually. PizzaExpress opted for a unified threat management (UTM) approach to security and is utilizing the virtual private network (VPN), antivirus, firewall, and intrusion prevention system (IPS) functionalities within Fortinet's FortiGate security appliances as such. www.fortinet.com /news/pr/2005/pr051705.html   (695 words)

High Availability Cluster - Compare Prices, Reviews and Buy at NexTag - Price - Review PRENTICE HALL Clusters for High Availability: A Primer of Hp Solutions High Availability Cluster - Compare Prices, Reviews and Buy at NexTag - Price - Review Tuning Microsoft Server Clusters: Guaranteeing High Availability for Business Netw... www.nextag.com /high-availability-cluster/search-html   (71 words)

Code Beach - Building a High-Availability MySQL Cluster If your necessary services rely on MySQL, clustering and high availability can prevent failures. Kris Buytaert shows how his group recently used MySQL Cluster and Heartbeat to provide redundant, failure-proof replication and availability of their data. Serious business services really can't go down, whether due to hardware or software failures. www.codebeach.com /Building-a-High-Availability-MySQL-Cluster-5688.asp   (107 words)

HomePage: Linux HA Provide a high-availability (clustering) solution for Linux which promotes reliability, availability, and serviceability (RAS) through a community development effort. Heartbeat is in the process of transforming itself to be aligned with the Open Cluster Framework (OCF) and the Service Availability Forum (SAF) standards and is a leading implementor of these standards. The basic goal of the High Availability Linux project is to: www.linux-ha.org   (548 words)

Japan High Availability Cluster Server Market Analysis This IDC Study provides analysis on the high-availability (HA) cluster software market in Japan in 2001 and 2002 by platform type and vendor, and studies the entire market situation. "The growth of the HA cluster software market despite the struggle of the server market indicates growing perception among user companies to encourage the implementation of core systems on open platforms and to avoid system breakdown." "The HA cluster software market in Japan grew by 15.4% in 2002 to 6.1 billion Yen," said Kumi Tanaka, Server Market Analyst, IDC Japan. www.marketresearch.com /researchindex/1015325.html   (140 words)

MySQL Cluster High Availability Features (by Jeremy Zawodny) Notes from the MySQL Cluster High Availability Features talk at the 2004 MySQL User's Conference... :-) This kind of high availability rocks, just from the sound of it.. The scripts to monitor the mysql service and fail over the cluster if it fails to get a mysqladmin ping response. jeremy.zawodny.com /blog/archives/001870.html   (650 words)

Dahlia Malkhi's publications by date Also available as Technical Report TR94-6, Institute of Computer Science, The Hebrew University of Jerusalem, March 1994. Extended report available as Technical report 92-9, Institute of Computer Science, The Hebrew University of Jerusalem, Israel. Extended report available as Technical Report 91-13, Institute of Computer Science, The Hebrew University of Jerusalem, Israel. www.research.microsoft.com /~dalia/pubs.html   (1876 words)

High Availability Geographic Cluster Product Information (HAGEO) High Availability Geographic Cluster (HAGEO) is a disaster recovery product that provides data redundancy and computing resources at two physical sites, no matter how far apart the sites may be. Contains the HAGEO interface to HACMP for cluster events. AIX Version 4.3 Packaging Guide for LPP Installation www.ualberta.ca /dept/chemeng/AIX-43/share/man/info/en_US/a_doc_lib/aixins/inslppkg/HAGC_PI.htm   (66 words)

Open HA Cluster - Easy High Availability Cluster Open HA Cluster - Easy High Availability Cluster The following doc will describe an installation of openha on two RedHat machines. Infos: sam028 AT users DOT sourceforge DOT net open-ha-cluster.sourceforge.net /doc0.html   (677 words)

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