HP XP7 Storage - Manual (Page 23)

4. On the Service Coefficient/Service Definition Options screen, complete the following:
•
For Dynamic alias management, choose the mode.
Values:
- Yes: Sets the WLM mode to goal mode. In goal mode, the number of alias devices
assigned to each PAV base device can dynamically increase or decrease based on the
number of I/O requests to each device.
- No: Sets the WLM mode to compatibility mode. In compatibility mode, the number of
alias devices assigned to each PAV base device remains the same, even when the number
of I/O requests to each device changes.
Default: Yes
•
For I/O priority management, enter a priority. The effect of this field setting depends on
the setting for Dynamic alias management.
The following table shows how the setting of for these items controls whether the Dynamic
Alias Algorithm is in effect.
Dynamic Alias Algorithm in Effect I/O
PriorityManagement Dynamic
AliasManagement
None (static PAV only) No No
None (static PAV only) Yes No
Efficiency only No Yes
Both efficiency and goal Yes Yes
5. (If you want to set the WLM to goal mode) In the WLM View Device Parameter / Feature
Definition screen, verify that DYNAMIC and WLMPAV are set to Yes.
Hyper Parallel Access Volumes enablement from z/OS on z/VM workflow
Complete the following process to enable HPAV from the z/OS on z/VM:
1. Enable HPAV from the z/OS.
For more information about enabling HPAV from the z/OS, see (page 23)
2. Enable HPAV from the z/OS on z/VM.
For more information about enabling HPAV from the z/OS on z/VM, see (page 24) .
Enabling Hyper Parallel Access Volumes on z/OS
Run the following command from the host system console:
SETIOS HYPERPAV=YES
An example of the command is shown below:
NOTE: You can set the SETIOS command for each logical partition (LPAR).
For more information about this command, see the IBM document OS/390® MVS System
Commands, GC28-1781.
HP Confidential Hyper Parallel Access Volumes enablement from z/OS on z/VM workflow 23