VERITAS FlashSnap Point-In-Time-Copy Solutions Administrator's Guide

Chapter 5, Decision Support

Creating an Off-Host Replica Database

As illustrated in “Example System Configuration for Off-Host Decision Support” on page 53, the

primary database volumes to be backed up, dbase_vol and dbase_logs, are configured on

disks attached to controllers c1 and c2, and the snapshots are created on disks attached to

controllers c3 and c4. There is no requirement for the OHP host to have access to the disks that

contain the primary database volumes.

Note If the database is configured on volumes in a cluster-shareable disk group, it is assumed that

the primary host for the database is the master node for the cluster. If the primary host is not

also the master node, all VxVM operations on shared disk groups must be performed on the

master node.

Example System Configuration for Off-Host Decision Support

Snapshot volumes created

on these disks are

accessed by both hosts

Volumes created on these

disks are accessed by the

primary host

Network

Primary host for database OHP host

Controllers

Local

disks

Controllers

c1 c2 c3 c4 c4c3c2c1

Local

disks

Disk

Arrays

Volumes created on local

disks of OHP host are used

for the replica database’s logs

and configuration files