Registering external volumes

Provisioning Guide for Mainframe Systems for VSP One Block 85
Version
10.5.x
File Size
1619 KB
Audience
anonymous
Part Number
MK-26VSP1B034-03
ft:lastEdition
2026-06-23

With this procedure, you can make the external mainframe system volumes usable more quickly.

You cannot register the external volume when it is disconnected.

The following operations can only be performed during formatting if the initial settings of the storage system are configured so that newly added volumes are automatically set to blocked status without being formatted. The initial settings of the storage system can be configured by specifying the -operation wcb option for the raidcom initialize ldev command in CCI.

  • Deleting LDEVs (converting LDEVs to the free space)
  • Creating LDEVs
  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 Universal Volume Manager to register the volume in the external volume group. For more information, see the Universal Volume Manager User Guide for VSP One Block.
    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 the storage system, use the Format command of Virtual LVI.
  3. Specify the external volumes to overwrite the control blocks of the external volumes in the group. Specify the -operation wcb option for the raidcom initialize ldev command in CCI to overwrite the control blocks of the external volumes. 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.