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HP serviceguard t2808-90006 manual Contents

Models: serviceguard t2808-90006

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Install Configuring your Environment Two Data Center Setup #RAIDTAB= # MD RAID Commands Recovery Process Alternative Power Sources Using Persistent Device Names

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HP serviceguard t2808-90006 manual Contents

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Contents

Page Legal Notices Contents Disaster Scenarios and Their Handling Managing an MD Device Contents Contents Editions and Releases Printing History HP Printing Division Document Organization Intended AudiencePage Related Page Disaster Tolerance Evaluating the Need for Disaster Tolerance Evaluating the Need for Disaster Tolerance High Availability Architecture What is a Disaster Tolerant Architecture?Node 1 fails Pkg B Client Connections Disaster Tolerant Architecture Extended Distance Clusters Understanding Types of Disaster Tolerant Clusters From both storage devices Extended Distance Cluster Two Data Center Setup Benefits of Extended Distance Cluster Cluster Extension CLX Cluster CLX for Linux Serviceguard Cluster Shows a CLX for a Linux Serviceguard cluster architecture Benefits of CLX Differences Between Extended Distance Cluster and CLX Continental Cluster New York Cluster Los Angeles ClusterData Cent er a Data Center B Continental Cluster Benefits of Continentalclusters Continental Cluster With Cascading Failover Comparison of Disaster Tolerant Solutions Attributes Extended Distance Comparison of Disaster Tolerant Cluster SolutionsContinentalclusters Cluster HP-UX only Understanding Types of Disaster Tolerant Clusters Understanding Types of Disaster Tolerant Clusters Understanding Types of Disaster Tolerant Clusters WAN EVA Protecting Nodes through Geographic Dispersion Disaster Tolerant Architecture Guidelines Off-line Data Replication Protecting Data through Replication Physical Data Replication On-line Data Replication Disadvantages of physical replication in hardware are Advantages of physical replication in hardware are Advantages of physical replication in software are Logical Data Replication Disadvantages of physical replication in software are Disadvantages of logical replication are Ideal Data Replication Using Alternative Power Sources Power Circuit 1 node Alternative Power SourcesData Center a Node 3 Power Circuit Creating Highly Available Networking Disaster Tolerant Wide Area Networking Disaster Tolerant Local Area Networking Disaster Tolerant Cluster Limitations Managing a Disaster Tolerant Environment Manage it in-house, or hire a service? How is the cluster maintained? Additional Disaster Tolerant Solutions Information Building an Extended Distance Dwdm Types of Data Link for Storage Networking Two Data Center and Quorum Service Location Architectures Two Data Center and Quorum Service Location Architectures Server Two Data Centers and Third Location with Dwdm and Quorum Two Data Center and Quorum Service Location Architectures Rules for Separate Network and Data Links Guidelines on Dwdm Links for Network and Data Guidelines on Dwdm Links for Network and Data Guidelines on Dwdm Links for Network and Data Chapter Configuring your Environment Understanding Software RAID Installing XDC Installing the Extended Distance Cluster SoftwareSupported Operating Systems Prerequisites # rpm -Uvh xdc-A.01.00-0.rhel4.noarch.rpm Verifying the XDC Installation Installing the Extended Distance Cluster Software Configuring the Environment Configuring the Environment Configuring the Environment Setting the Value of the Link Down Timeout Parameter Configuring Multiple Paths to Storage Cluster Reformation Time and Timeout Values Http//docs.hp.com Using Persistent Device Names To Create and Assemble an MD Device Creating a Multiple Disk Device # mdadm -A -R /dev/md0 /dev/hpdev/sde1 /dev/hpdev/sdf1 Chapter Linux #RAIDTAB= # MD RAID Commands To Edit the Datarep Variable Creating and Editing the Package Control ScriptsTo Create a Package Control Script Editing the raid.conf File To Edit the Xdcconfig File parameterTo Configure the RAID Monitoring Service Cases to Consider when Setting Rpotarget RPO Target Definitions Chapter Multipledevices and Componentdevices Raidmonitorinterval Configuring your Environment for Software RAID Disaster Scenario What happens when this disaster occursRecovery Process Disaster Scenarios and Their Handling Disaster Scenarios and Their Handling # mdadm --remove /dev/md0 # mdadm -add /dev/md0 Dev/hpdev/mylink-sdf P1 uses a mirror md0 Run the following command to S2 is non-current by less # cmrunpkg packagename Execute the commands that With md0 consisting of only N1, for example Becomes accessible from N2 Center Disaster Scenarios and Their Handling Managing an MD Device Cat /proc/mdstat Viewing the Status of the MD Device Example A-1 Stopping the MD Device /dev/md0 Stopping the MD Device Example A-2 Starting the MD Device /dev/md0 Starting the MD Device # udevinfo -q symlink -n sdc1 Removing and Adding an MD Mirror Component Disk # mdadm --remove /dev/md0 /dev/hpdev/sde Adding a Mirror Component Device Index 104

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