DB2 Version 10.1 for Linux, UNIX, and Windows

Configuration tasks

This section contains information about configuring the group buffer pool and cluster caching facilities, and changing the cluster file system quorum type. Generally speaking, most of these tasks are only necessary in certain circumstances.

Creating a shared file system
Once you have created a DB2 pureScale instance, you must create the file systems for the database directories and log files, before you create a database.
DB2 pureScale Feature cluster caching facility configuration
In a DB2 pureScale environment, the cluster caching facility, also known as CF, is used to facilitate global locking and buffer pool management. CF configuration is integrated into DB2 infrastructure and managed by DB2 configuration interfaces.
Changing the cluster manager quorum type
The DB2 cluster services tiebreaker is set up initially in the installation GUI when the first instance is created. Change the cluster manager quorum type only if a problem occurs with the specified disk or the configuration changes.
Changing the shared file system quorum type
The shared file system quorum type is assigned automatically during the setup of the IBM® DB2 pureScale Feature. Because the quorum type selected is based upon the number of hosts in the cluster, you must change the quorum type after adding or removing hosts from the DB2 instance.
Changing the host failure detection time
Fast failure detection is crucial to a DB2 pureScale instance because the faster a host failure is detected, the earlier the recovery for the failure can begin. That said, an aggressive setting for the host failure detection time is not suited for high-latency environments, so users might want to adjust the setting.
Buffer pools in a DB2 pureScale environment
In a DB2 pureScale environment, the cluster caching facility provides a common group buffer pool (GBP) that is shared by all members. Each member also manages its own set of local buffer pools (LBPs).
Self-tuning memory in a DB2 pureScale environment
When self-tuning memory is enabled in a DB2 pureScale environment, the tuning member monitors the memory configuration and propagates any configuration changes to all other members.
Table partitioning in a DB2 pureScale environment
You can use table partitioning in DB2 pureScale to divide large table objects between multiple partitions for better performance.
Table space considerations for the DB2 pureScale Feature
A DB2 pureScale environment requires specific types of table spaces.

Parent topic: Instance management in a DB2 pureScale environment