Chapter 6. Availability enhancements 99
The DB2 pureScale Feature provides continuous availability, scalability, and
application transparency across a cluster of database servers that share a
common set of disks. The DB2 pureScale technology is based on the proven
DB2 for IBM z/OS® Parallel Sysplex® architecture, recognized as a gold industry
standard for maintaining high availability and scalability.
A DB2 pureScale instance consists of members and the cluster caching facility
(CF) servers. A typical DB2 pureScale environment has four members and two
CFs: a primary CF and a secondary CF.
DB2 Cluster Services (CS) is a set of subcomponents and services that provide
built-in failure detection, recovery automation, and a cluster file system ...