License- and Platform-Dependent Upgrade Considerations

The following considerations that apply when transitioning from SLES 10 to SLES 11 are license or platform dependent.

• If you have not secured TASM licensing for use with your SLES 11 system, or TASM licensing is not available on the system hardware, licensing defaults to IWM upon operating system upgrade. The workload-management options available with IWM licensing represent a subset of the options available with full TASM licensing. For example, only one virtual partition can be created, SLG tiers are not available, and workload exceptions are available only at the Tactical tier. In the absence of exceptions at the Timeshare tier, consider instead using throttles to refine management of low priority workloads.
  After upgrading a SLES 10 appliance-licensed system in place, only IWM licensing is available with SLES 11.
• If you are upgrading or migrating from a TASM-licensed system, you can use the Pre-Migration Tool to refine the otherwise automatic results of migrating SLES 10 workload priority-scheduling settings. If you are upgrading or migrating from a PSF-licensed system and have in-depth understanding of PD set configuration, you can likewise use the Pre-Migration Tool. As a pre-requisite to using the tool in the latter scenario, however, you must convert PD sets to rule sets containing workloads while still running Teradata Database version 13.0 or lower. Whether transitioning from a TASM-licensed or PSF-licensed system, use the Pre-Migration Tool well in advance of the operating system upgrade.
  The minimum Teradata Database version for using the Pre-Migration Tool is 13.10.
• Because SLES 10 appliance-licensed systems do not provide rule sets and workloads, you cannot use the Pre-Migration Tool when upgrading or migrating from these systems.
• If your SLES 10 system includes rule sets that you have not used and do not intend to use in the future, delete them to speed the process of workload migration.
• If you are migrating workloads based on user-defined SLES 10 performance groups from a PSF-licensed system, you must be running Teradata Database version 14.10 or later or 14.00.04.01 at the time of operating system upgrade, to ensure that workloads based on default performance groups are assigned the expected timeshare access level in SLES 11.
• If installing Teradata Database version 14.00.02.11 on a 2690 or 2700 system, do not enable hardware compression.