Veritas FlashSnap Point-In-Time Copy Solutions 5.0.1 Administrators Guide, HP-UX 11i v3, First Edition, November 2009

Figure 1-3

Example implementation of an off-host point-in-time copy solution

Network

Disks containing primary

volumes used to hold

production databases or file

systems

Disks containing snapshot

volumes

SCSI or Fibre

Channel connectivity

OHP host

Primary Host

1 2

Also, if you place the snapshot volumes on disks that are attached to host

controllers other than those for the disks in the primary volumes, it is possible

to avoid contending with the primary host for I/O resources. To implement this,

paths 1 and 2 shown in the Figure 1-3 should be connected to different controllers.

Figure 1-4 shows an example of how you might achieve such connectivity using

Fibre Channel technology with 4 Fibre Channel controllers in the primary host.

Point-in-time copy solutions

Implementing off-host point-in-time copy solutions