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• The hpss_dce_export and hpss_unix_import utilities are provided to convert DCE
authorization information.
LDAP:
• Configuring LDAP is more complex than Unix.
• Managing LDAP is fairly simple and does not require regular maintenance.
• The hpss_dce_export and hpss_ldap_import utilities areprovided to convert DCE
authorization information.
6.2.4. New HPSS 6.2 System Files
There are several new files in /var/hpss that the HPSS system uses which are described in the
appendix titled /var/hpss files in Appendix E. The files located under /var/hpss/etc are used in
providing security and communications services. Many of these files are created or modified by
programs during the upgrade process. Some may require hand modifications in order to preserve the
configuration settings from the previous HPSS version. Become familiar with these files before
beginning the upgrade process. If problems are encountered while attempting to start the HPSS 6.2
system, the file contents should be reviewed..
6.2.5. Testing the Metadata Conversion
To minimize the downtime of a production system, we strongly recommend that sites perform a test
run on a non-production system using the production metadata. The test run allows for potential
issues and/or problems to be resolved prior to the metadata conversion of the production system.
Additionally, the administrators will become familiar with the conversion process. Contact your
HPSS customer support representative for more information on setting up a test system using the
production metadata.
Sites may also practice the metadata conversion on the production system during a system
maintenance period. This allows additional factors, such as system conversion load management and
configuration of system resources, to be verified. However, performing this type of practice
conversion requires even more detailed planning than usual to ensure that it will not interfere with the
production system. Be sure to coordinate any such practice conversion with your HPSS customer
support representative.
6.2.6. Estimating the Metadata Conversion Time (for 4.5 upgrades
only)
The overall amount of time required to perform a metadata conversion from HPSS 4.5 depends
largely on the size of the HPSS system being converted (number of files, number of file segments,
number of storage segments, number of storage subsystems, etc.). The 6.2 conversion programs are
separated into three categories depending on the size and type of metadata each will convert. The
categories are:
• Configuration conversion
• Subsystem conversion
• Long running conversion
The time that the configuration and subsystem conversion steps take will depend mainly on the
number of catridges and the number of subsystems that the HPSS system contains. For a test HPSS
system with a single subsystem containing 4,500 cartridges, the configuration conversion took about
HPSS Installation Guide July 2008
Release 6.2 (Revision 2.0) 184