- If your existing hardware supports SLES 11, you can upgrade the operating system in place without migrating data.
- If you have purchased different hardware that supports SLES 11, you must migrate data from your SLES 10 system to your SLES 11 system.
In either case, the required steps for transitioning a Teradata system vary depending on existing database and operating system versions.
- Means of migrating workloads
- Tasks to prepare workloads for migration
- Workload-management options and required configuration post upgrade
Regardless of upgrade and workload-migration paths, transitioning from SLES 10 to SLES 11 has implications for workload priority scheduling in Teradata Database, because resource allocation is handled differently on the two operating systems. In addition, upgrading from SLES 10 to SLES 11 may result in CPU overhead of 6-8%.
Upgrading an operating system is an involved process that occurs in multiple phases beginning at least 90 days before and ending a day or two after the upgrade itself. To initiate the upgrade process, obtain a Change Control number from Teradata Customer Services.