This section describes how you can delete or remove fixed block
or count key data storage within a storage unit by using the command-line interface. This
applies to entire configurations and not just the removal of a volume or volume
group.
Before you begin, you must be logged into the DS CLI application in interactive
command mode. You must also be connected to a storage image that is used for
open systems host system storage.
Deleting data storage configurations involves the following steps:
- Remove host access to the volumes that will be removed.
- For fixed block storage , the SCSI host port IDs must be removed.
- For count key data storage, the CKD volumes are automatically removed
from the FICON/ESCON-All volume group ID (10) when the CKD volumes are deleted.
- Remove the volume groups.
- For fixed block storage, if all of the fixed block volumes are being removed,
the associated volume groups must be removed.
- The FICON/ESCON-All volume group is automatically removed when the last
CKD volume is removed.
- Remove the volumes. This applies to both fixed block and count key data
storage.
- Remove the logical control units (CKD only).
Note: Logical subsystems (LSS)
are automatically removed when the fixed block volumes are removed.
- Remove the ranks.
- Remove the arrays.
- Remove the extent pools.
When all the steps have been completed, the array sites that have been
freed are designated as unassigned. They can be redefined to
make new fixed block or CKD storage resources.