HP XP P9500 Storage - Manual (Page 22)

4 Preparing for Parallel Access Volumes operations
This topic describes the necessary preparations to use Parallel Access Volumes with your system.
Setting the WLM mode
To use dynamic Parallel Access Volumes, the WLM must be set to goal mode. In goal mode, WLM
can assign more or fewer aliases to a base device based on the host I/O activity to that device.
To use static Parallel Access Volumes, the WLM must be set to compatibility mode. In compatibility
mode, the number of aliases assigned to each base device remains the same regardless of host
I/O activity to that device.
To use Hyper Parallel Access Volumes, you do not need to set the WLM operation modes.
Procedure 4 To view/modify WLM mode:
1. On the WLM startup screen, press Enter to display the Choose Service Definition screen.
2. Select option 1 and press Enter to display the WLM primary options screen.
3. Select option 8 to display the Service Coefficient/Service Definition Options screen.
22 Preparing for Parallel Access Volumes operations