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Фрагмент инструкции
Abstract
This white paper describes the steps necessary to implement the configuration and integration of a Cel Manager
in a Cluster environment with Veritas Cluster Server. It covers Data Protector A.06.11 and Data Protector
A.06.20 with Veritas Cluster Server 5.1 SP2 (VrtsSFHA 5.1 SP2 for Windows).
Introduction
This document introduces the configuration and integration of Data Protector with the Veritas Cluster Environment
on Windows.
It also tells how auto-failover of the Cel Manager occurs on secondary nodes of the cluster when the primary or
active node goes down.
Unlike MSCS cluster, Data Protector does not recognize cluster availability during installation, so Data Protector is
installed as a standalone Cell Manager in all the nodes of the cluster and then manually integrated with Veritas
Cluster service groups.
Just like MSCS Cluster, in VCS the Cell Manager connectivity will be performed through the virtual IP, and the
Internal Database of the Cell Manager resides on the shared disks.
Overview of Cell Manager cluster
Failover in a cluster
A cluster's ability to redirect requests from one server to another is cal ed failover.
When the active node of the cluster goes down, along with the other cluster resources, Data Protector services
are moved to another node, so that they are available for users to continue with their backup processes. As the
Internal Database of the Cell Manager resides on the shared disks, all the pre-executed sessions wil also be
available to users.
The Cluster Manager on each cluster server sends out probes to each of the other cluster servers to determine the
availability of each server. The Cluster Manager also checks continually if Data Protector services are running on
the active node of the cluster. If the services go down, it performs auto-failover of the cluster and brings the
services up and running on the other node of the cluster.
Example
This example describes how Data Protector fails over. This cluster contains three nodes. Node 1 is currently
unavailable. The Cluster Managers on Node 2 and Node 3 are aware that Node 1 is unavailable.
Cell Manager (Virtual IP)
If Node 1 goes
Cluster resource is migrated to Node
down
2 and Data Protector comes up
Cluster
Cluster
Cluster
Node 1
Node 2
Node 3
The user tries to connect to the Cell Manager (Virtual IP).
When the server stops responding, the cluster migrates the resources from Node 1 to Node 2 and brings the
Data Protector services up and available for the user.
2
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