IBM RELEASE 7.3 - Manual (Page 82)

E. Issue the following SQL command:
db2> select count(*) from nsobject
The result of the command should indicate 2 rows in this table.
3. If any of these checks gives an unexpected result, do not delete the subsystem. Contact HPSS
customer support.
When deleting an existing storage subsystem, it is critical that all of the different configuration
metadata entries described in section 4.2.3: Storage Subsystem Configuration Window on page
76 for the storage subsystem be deleted. If this is not done, configuration metadata entries
associated with the subsystem will become orphaned when the subsystem configuration itself is
deleted. This situation is difficult to correct after the subsystem is deleted.
Once it has been verified that the storage subsystem contains no files or directories, deleting the
subsystem may be accomplished by reversing the steps used to create the subsystem. These steps are
listed in the order which they should be performed below. For information on each step, see the
corresponding instructions under Section 4.2.2: Creating a New Storage Subsystem on page 76.
1. Delete all storage resources assigned to the subsystem's Core Server. See Section 8.2.1: Deleting
Storage Resources on page 240.
2. Delete all filesets and junctions used to link the storage subsystem into the HPSS name space. See
Section 10.6: Deleting a Junction on page 316.
3. Delete all storage class subsystem-specific thresholds associated with the storage subsystem being
deleted. This is done by setting these thresholds back to the storage class “default” thresholds.
4. Delete all subsystem-specific migration and purge policy entries associated with the storage
subsystem being deleted. See Section 6.4.2.4: Deleting a Migration Policy on page 188 and
Section 6.5.4: Deleting a Purge Policy on page 193 for more information.
5. Delete all Core Servers, Migration Purge Server and DMAP Gateway Server residing within the
storage subsystem being deleted. See Section 5.1.1: Deleting a Server Configuration on page 123.
6. Delete the subsystem configuration.
7. Remove the database associated with the subsystem.
HPSS Management Guide November 2009
Release 7.3 (Revision 1.0) 82