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

Implementing Off-Host Point-In-Time Copy Solutions

14 VERITAS FlashSnap Point-In-Time Copy Solutions Administrator’s Guide

Alternatively, the OHP node could be a separate system that has a network connection to the

cluster, but which is not a cluster node and is not connected to the cluster’s private network. This

arrangement is illustrated in “Example implementation of an Off-Host Point-In-Time Copy

Solution Using a Separate OHP Host” on page 14.

Example implementation of an Off-Host Point-In-Time Copy Solution Using a Separate OHP Host

Note For off-host processing, the example scenarios in this document assume that a separate OHP

host is dedicated to the backup or decision support role. For clusters, it may be simpler to

configure an OHP host that is not a member of the cluster.

“Using VERITAS FlashSnap to implement Off-Host Processing Solutions” on page 15 illustrates

the steps that are needed to set up the processing solution on the primary host. Disk Group

Split/Join is used to split off snapshot volumes into a separate disk group that is imported on the

OHP host.

Note As the snapshot volumes are to be moved into another disk group and then imported on

another host, their contents must first be synchronized with the parent volumes. On

reimporting the snapshot volumes, refreshing their contents from the original volume is

speeded by using FastResync.

Network

Disks containing primary

volumes used to hold

production databases or file

systems

Disks containing snapshot

volumes used to implement

off-host processing solutions

SCSI or Fibre

Channel Connectivity

OHP Host

Cluster