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VERITAS SOFTWARE
Founded in 1983 as Tolerant Systems
Renamed as Veritas Software Corp. in 1989
It is merged with Symantec in 2005
Specialized in Storage management
Developed first commercial Journaling File System, VxFS
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VERITAS FILE SYSTEM, VXFS
Extent based file system
Primary file system for HP-UX OS
AKA Online JFS
Supported on several platforms like AIX, Unix, Solaris etc.
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The types.cf file
type DiskGroup ( static keylist SupportedActions = { "license.vfd",
"disk.vfd", numdisks } static int OnlineRetryLimit = 1 static str
ArgList[] = { DiskGroup, StartVolumes, StopVolumes, MonitorOnly,
MonitorReservation, tempUseFence, PanicSystemOnDGLoss,
DiskGroupType } str DiskGroup str StartVolumes = 1 str StopVolumes
= 1 static int NumThreads = 1 boolean MonitorReservation = 0 temp
str tempUseFence = INVALID boolean PanicSystemOnDGLoss = 0 str
DiskGroupType = private )
About the main.cf file in VCS
he format of the main.cf file comprises include clauses and definitions
for the cluster, systems, service groups, and resources. The main.cf file
also includes service group and resource dependency clauses.
Include clauses—Include clauses incorporate additional configuration
files into main.cf. These additional files typically contain type
definitions, including the types.cf file. Typically, custom agents add
type definitions in their own files.
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About the VCS configuration
language
There are several ways to generate configuration files:
Use the web-based Cluster Management Console
Use Cluster Manager (Java Console).
Use the command-line interface.
If VCS is not running, use a text editor to create and modify the
files.
Configuration concepts and configuring VCS
main.cf – Defines the cluster, including services groups and
resources.
types.cf – Defines the resource types.
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Basic shared storage cluster
In this configuration, a single cluster shares access to a storage device,
typically over a SAN. An application can only be started on a node with access to
the required storage. For example, in a multi-node cluster, any node that
is designated to run a specific database instance must have access to the
storage where the database’s tablespaces, redo logs and control files are stored.
Service Groups
There are three types of service groups:
Failover - The service group runs on one system at any one time.
Parallel - The service group can run simultaneously pn more than one system at
any time.
Hybrid - A hybrid service group is a combination of a failover service group and a
parallel service group used in VCS 4.0 replicated data clusters, which are based on
Veritas Volume Replicator.
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Resources
Resources are objects that related to hardware and software, VCS
controls these resources through these actions:
Bringing resource online (starting)
Taking resource offline (stopping)
Monitoring a resource (probing)
Proxy Resource
A proxy resource allows multiple service groups to monitor the
same network interface. This reduces the network traffic that would
result from having multiple NIC resources in different service groups
monitoring the same interface.
Phantom Resource
The phantom resource is used to report the actual status of a
service group that consists of only persistent resources.
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COURSE OUTLINE
Part I: Veritas Cluster Server 5.1 – Install and
Configure
High Availability Concepts
• High Availability Concepts
• Clustering Concepts
• High Availability Application Services
• Clustering Prerequisites
VCS Building Blocks
• VCS Terminology
• Cluster Communication
• VCS Architecture
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Preparing a Site for VCS
• Hardware Requirements and
Recommendations
• Software Requirements and
Recommendations
• Preparing Installation Information
Installing VCS
• Using the Symantec Product Installer
• VCS Configuration Files
• Viewing the Default VCS Configuration
• Installing the Cluster Manager Java GUI
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VCS Configuration Methods
• Starting and Stopping VCS
• Overview of Configuration Methods
• Online Configuration
• Offline Configuration
• Controlling Access to VCS
Preparing Services for VCS
• Preparing Applications for VCS
• Performing One-Time Configuration Tasks
• Testing the Application Service
• Stopping and Migrating an Application Service
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Online Configuration
• Online Service Group Configuration
• Adding Resources
• Solving Common Configuration Errors
• Testing the Service Group
Offline Configuration
• Offline Configuration Procedures
• Solving Offline Configuration Problems
• Testing the Service Group
Configuring Notification
• Notification Overview
• Configuring Notification
• Using Triggers for Notification
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Where to Get More Information
Vibrant Group:
www.vibrantgroup.co.in
Vibrant Technologies & Computers
www.vibranttechnologies.co.in/technologies.vibrantgroup.co.
in
Vibrant HR Team
www.hr.vibrangroup.co.in