Planning considerations

This section describes the planning considerations including the hardware and software requirements necessary to configure and use Db2® Mirror.

Software requirements
There are software requirements for the Db2 Mirror environment.
Hardware requirements
There are hardware requirements for the Db2 Mirror environment.
Hardware Management Console (HMC) requirements
The Db2 Mirror nodes must be managed by a Hardware Management Console (HMC).
Storage requirements
The Db2 Mirror environment can be created on systems using any type of storage. There are different requirements and considerations for different types of storage.
Network
A high-speed network connection between the two Db2 Mirror nodes is required.
Exit points
To programmatically monitor for state and role changes, you can register exit programs for when the replication state changes or for when a node changes its primary or secondary role. In addition, there are exit points for preclone and postclone processing, as well as for software reclone. These exit programs must be added on each node where they are to be called.
Security and auditing
There are security considerations and audit journal entries for the configuration and management of Db2 Mirror.
Time synchronization using NTP
The Network Time Protocol (NTP) client must be used in the Db2 Mirror environment to keep the system clocks synchronized. The two Db2 Mirror nodes also must use the same local time and time zone.
Clustering
A cluster is a component of Db2 Mirror that is required for independent auxiliary storage pool (IASP) management, maintaining quorum data, and advanced node failure detection.
Independent auxiliary storage pools
An independent auxiliary storage pool (IASP) can be configured for Db2 Mirror as either an integrated file system (IFS) IASP or a database IASP. IASPs that contain both types of data will only be able to make one type of data highly available in the Db2 Mirror environment.
Relational database directory entries
Review the relational database (RDB) directory entries on the setup source node.
Object replication considerations
You must determine which objects you want replicated for Db2 Mirror. The Replication Criteria List (RCL) is where you register the rules for objects.
Planning checklist
This planning checklist provides a list of the information required during the configuration of the Db2 Mirror environment.

Parent topic: Planning and setup