Hp XP P9500 Storage User Manual download pdf (Page 34)

of LDEVs and Use External Storage System Configuration, and 1 displays (since OPEN-V is

the emulation type). See Capacity requirements for volumes (page 16) for more information.

13. In Cache Partition, select the CLPR for accessing the mapped external volume.

NOTE: For more information about the Cache Partition, Cache Mode, and Inflow Control

settings, see Editing external volume policies (settings) (page 36).

14. In Cache Mode, click Enable to propagate write data asynchronously from cache to the external

storage system. Click Disable to propagate data synchronously.

• If you specify Disable, the Cache Residency bind mode cannot be set.

• When the external volume is a command device, Cache Mode for the remote command

device is automatically set to Disable regardless of your setting.

• Data that is not written by the host (for example, data written by pair operation) is

asynchronously destaged to the external storage system regardless of the Cache Mode

setting.

15. In Inflow Control, click Enable to limit or prevent write data from being written to cache memory

when the write operation to the external volume cannot be performed. Click Disable to allow

write data to be written to cache.

16. In Processor Blade, select the processor blade for the external volume. Processor blade

assignment should evenly distribute work across the available processors.

The range is from MPB0 to MPB7. The value depends on the configuration of the device.

Select Auto (the default) to cause a processor blade to be automatically assigned by the system.

If Auto cannot be selected, the processor blade with the lowest number is selected by default.

17. Click Add.

18. If you need to change the added volume’s settings, in the Selected External Volumes list click

the volume, click Change Settings, make necessary changes, and click OK.

19. Click OK.

To to add LUN paths, click Next in the Add External Volumes window. See the HP XP P9000

Provisioning for Open Systems User Guide for information.

20. Click Finish when ready.

21. In the Confirm window, check all settings, accept or enter a new task name, and then click

Apply.

Preparing mapped volumes for use

After your external volume is mapped to the local storage system, proceed as follows:

Procedure 4 To prepare mapped volumes for use

1. Based on emulation type, perform one of the following:

• For mainframe emulation, the status of the mapped volume becomes Blockade after

mapping. Format the volume using Virtual LVI to change to a normal status.

For zero-formatted external volumes, use Virtual LVI to perform the Write to Control Blocks

operation to restore the volume. Even if you formatted the volume from the external storage

side after recovering the mapped volume, you must perform the Write to Control Blocks

operation of the VLL feature after the formatting. For instructions, see the HP P9000

Provisioning for Mainframe Systems User Guide.

• For open-system emulation, the status of the mapped volume automatically becomes

Normal. If you need to initialize the data area of the mapped volume, format the volume

using Virtual LUN.

34 Setting up external volumes

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