HADR supported in a DB2 pureScale environments starting with DB2 10.5
• DB2 pureScale environments now support DB2 high availability disaster
recovery (HADR).
Combines the continuous availability of the DB2 pureScale Feature with the robust
disaster recovery capabilities of HADR.
Normally you do not distribute DB2 members across different geographic locations.
HADR excels at providing local high availability or remote disaster recovery.
• Integration of HADR with the DB2 pureScale Feature, provides a number of
advantages:
Better synchronization. With 10.5, only ASYNCH and SUPERASYNCH were
supported.
DDL support. HADR replicates DDL operations.
Ease of use. HADR is easy to configure and maintain.
Native takeover support.
− By using the TAKEOVER HADR command, you can perform either a graceful takeover (role
switch) or a forced takeover (failover).
DB2 HADR features for DB2 pureScale
• Integrated disaster recovery solution
Very simple to setup, configure, and manage
• Support includes
Time delayed apply
Log spooling
Both non-forced (role switch) and forced (failover) takeovers
• Member topology must match between primary and standby clusters
Different physical configuration allowed (less resources, sharing of
LPAR, etc.)