HP XP7 Storage - Manual (Page 51)

Registering external volumes
The Storage Administrator (Provisioning) role is required to perform this task.
Using this procedure, you can make the external mainframe system volumes usable more quickly.
When the external volume is disconnected, you cannot register the external volume.
1.
Perform zero-formatting on the external mainframe system volumes.
Zero-formatting writes 0’s in the entire disk area, formatting the entire disk area. For information
about how to perform zero-formatting, see the documentation for your mainframe system or
external storage system.
2. Map the zero-formatted external volumes using External Storage to register the volume in the
external volume group. For more information, see the HP XP7 External Storage for Open and
Mainframe Systems User Guide.
Non-zero-formatted external volumes must not be registered in the external groups. If the
external volumes are registered, performing the next step (step 3) will block and disable the
volumes to be read and written from the host. To make the non-zero-formatted external volumes
usable with HP XP7 Storage, use the Format command of Virtual LVI.
3. Specify the external volumes to overwrite the control blocks of the external volumes in the
group (see
“Overwriting control blocks in specific external volumes” (page 51) ). A control
block, which is a kind of volume area, is used to store information other than the user's data.
Only the storage administrator is authorized to overwrite the control blocks.
After overwriting completes, the external volumes are available for use in the storage system.
You can perform the following tasks while the LDEV is formatted, but only when the storage system
is, by default, set to making the increased volumes blocked instead of formatting them automatically.
For information about default settings of the storage system, see
“Overwriting control blocks in
specific external volumes” (page 51) .
•
Deleting LDEVs (converting LDEVs to the free space).
•
Creating LDEVs.
Overwriting control blocks in specific external volumes
The Storage Administrator (Provisioning) role is required to perform this task.
1.
Perform zero-formatting on the mainframe system volumes to register them (see steps 1 and 2
in
“Registering external volumes” (page 51) ).
2. In the Storage Systems tree, select External Storages.
The External Storage Systems tab appears.
3. Click the value of Vendor / Model / Serial Number of the external storage.
The External Path Groups tab appears.
4. Click the value of External Path Group ID.
The Mapped Volumes tab appears.
5. Select the row of the parity group that contains the external volume to be blocked, click More
Actions and select Disconnect External Volumes.
For more details about using the Disconnect External Volumes button, see the HP XP7 External
Storage for Open and Mainframe Systems User Guide.
6. In the Storage Systems tree, click Parity Groups and External. Then select the parity group
that contains the blocked external volume.
The LDEV tab appears. Confirm that Blocked displays in the Status column.
Making external mainframe system volumes usable 51