Preparing Workloads for Migration
- Control which rule sets and, therefore, workloads to migrate. When you select rule sets for migration, only those rule sets and their corresponding workloads are migrated.The ability to control which rule sets are migrated applies only to the following versions of Teradata Database: 13.10; 14.0 lower than 184.108.40.206; and 14.10 lower than 220.127.116.11. Otherwise, all SLES 10 rule sets and workloads are migrated, regardless of whether the tool is used.
- Distribute workloads among tiers.
- Change allocation percentages for SLG workloads.SLG tiers are available only with Teradata Active System Management (TASM) licensing. Teradata Integrated Workload Management (IWM) licensing provides the Tactical and Timeshare tiers only.
- Adjust access levels for timeshare workloads.
The Pre-Migration Tool writes output directives into a pre-migration table called tdwm.premigrate. When the TDWMDIP program is run after upgrading the operating system, the SLES 10 Teradata Workload Manager (TDWM) rule sets, including corresponding workloads, are migrated to SLES 11 based on the directives within the tdwm.premigrate table.
Migration without Workload Preparation
Other Workload Migration Considerations
The migration process yields a pre-configured exception for tactical workloads, regardless of whether the Pre-Migration Tool is used. The process also sets pre-configured system-wide limit and reserve values for the Always planned environment. You cannot change the exception or the limit and reserve values before workload migration. However, with IWM licensing, you can subsequently use the Workload Designer Portlet in Teradata Viewpoint to change the reserve values or exception; TASM licensing provides for changing values for these parameters as well as limit values.
Regardless of whether you use the Pre-Migration Tool to prepare workloads for the operating system upgrade, the results of the migration process vary based on the type of system from which you are upgrading and the workload-management licensing you have secured for use with SLES 11. Likewise, the workload-management options available post upgrade vary based on licensing.