IBM DS8000 manual Managing multipath volumes using iSeries Navigator

Managing multipath volumes using iSeries Navigator

All units are initially created with a prefix of DD. As soon as the system detects that there is more than one path to a specific logical unit, it will automatically assign a unique resource name with a prefix of DMP for both the initial path and any additional paths.

When using the standard disk panels in iSeries Navigator, only a single (the initial) path is shown. The following steps show how to see the additional paths.

To see the number of paths available for a logical unit, open iSeries Navigator and expand Configuration and Service, Hardware, and Disk Units as shown in Figure B-30and click All Disk Units. The number of paths for each unit is shown in column Number of Connections visible on the right of the panel. In this example, there are 8 connections for each of the multipath units.

Figure B-30 Example of multipath logical units

To see the other connections to a logical unit, right click on the unit and select Properties, as shown in Figure B-31 on page 393.

392DS8000 Series: Concepts and Architecture