Pager 

Pagers (data writers) is part of a user kernel thread (UKT). A pager is a task that is responsible for writing data from the data cache to the data volumes. Pagers become active when a savepoint is performed. In a restart, the pagers are responsible for reading the converter.

Writing savepoints can take a long time for a large data cache.In this case, the pagers also become active between the end of a savepoint and the start of the next one, to write changed data asynchronously from the data cache to disk.

The system calculates the number of pagers. It depends primarily on the data cache size (CACHE_SIZE) and the number of data volumes (MAXDATAVOLUMES).