The Cube Processing task lets you to reprocess the OLAP partitions when you want to optimize Analysis Center performance, fix corrupted OLAP database files, or view older data that Analysis Center might not load automatically. You can select OLAP databases and partitions by specified time ranges, and choose the number of partitions to process at a time. In addition, you can choose to display UTC partitions separately. However, you cannot process partitions until you have disabled all the ETL and OLAP jobs.