5 performing parallel access volumes operations, About assigning alias volumes, Assigning alias volumes to base volumes – HP XP7 Storage User Manual
Page 25: Prerequisites
5 Performing Parallel Access Volumes operations
This topic describes performing PAV operations on the Remote Web Console storage system using
the GUI.
About assigning alias volumes
You can assign aliases to base volumes in HP XP7 Storage. You can assign up to 255 aliases to
a base device.
If the number of free volumes you have selected is larger than the number of base volumes you
have selected, the PAV function attempts to allocate the free volumes equally to the base volumes.
For example, if you select six free volumes and two base volumes, three free volumes (aliases) are
allocated to each base volume.
Assigning alias volumes to base volumes
You can assign aliases to base volumes in HP XP7 Storage. You can assign up to 255 aliases to
a base device.
If the number of free volumes you have selected is larger than the number of base volumes you
have selected, the PAV function attempts to allocate the free volumes equally to the base volumes.
For example, if you select six free volumes and two base volumes, three free volumes (aliases) are
allocated to each base volume.
If you are using HPAV to issue I/O requests only to a CU, complete the following:
1.
Decide the number of aliases that are necessary for the CU.
2.
Assign the aliases to arbitrary base volumes.
Assigned aliases function as aliases for all base volumes in a CU. In this case, assign three or less
alias devices for each base device.
CAUTION:
Assigning alias volumes simultaneously to more than one CU can degrade host
performance.
Prerequisites
•
The PAV or HPAV option is enabled using Remote Web Console.
•
You must have the Storage Administrator (Provisioning) role to perform this task.
•
You must enable the Remote Web Console secondary window. For more information, see the
HP XP7 Remote Web Console User Guide.
•
Base devices are defined in the storage system
1.
In the Remote Web Console main window, select Actions > Mainframe Connection > Parallel
Access Volumes.
2.
Click
to change to Modify mode.
3.
In the Parallel Access Volumes window (shown in the following figure), select the LDKC which
includes the CU image to be modified from the LDKC list.
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About assigning alias volumes
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