Connections Between Secondary Storage Systems

If you use more than one primary storage system and more than one secondary storage system, you must establish connections among the secondary storage systems. To do this, you must configure paths and ports. Also, you must create remote command devices by using Universal Volume Manager.

The following figure is an example of connections among secondary storage systems.

A’

 

 

 

 

 

 

 

External

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

port

Remote

command device

Target

 

 

 

 

 

A

 

 

 

 

 

 

 

 

port

Command device

 

 

Subordinate DKC

 

 

(Secondary storage system 2)

B’

External

Target

B

port

port

 

 

Remote

 

 

Command device

command device

 

 

 

 

 

Supervisor DKC

 

Subordinate DKC

(Secondary storage system 1)

(Secondary storage system 3)

Legend

mapping

Figure 3-7 An Example of Connections among Secondary Storage Systems

Based on the example in Figure 3-7, the subsections below explain configuration of paths and ports, and creation of remote command devices.

Chapter 3 Preparing for Universal Replicator z/OS Operations

3-21

Hitachi Universal Replicator for IBM /OS User’s Guide

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Hitachi MP-96RD625-01 manual Connections Between Secondary Storage Systems