Planning Metro Mirror
IBM® PowerHA® SystemMirror® for i supports Metro
Mirror, which provides high availability and disaster recovery. To
effectively configure and manage a high availability solution that
uses this technology, proper planning is required.
Hardware requirements for Metro Mirror
To configure and manage an PowerHA solution that uses Metro Mirror technology, you should ensure that the minimum hardware requirements are met.
Software requirements for Metro Mirror
Before configuring an IBM i high-availability solution that uses Metro Mirror, ensure that the minimum software requirements have been met.
Communications requirement for Metro Mirror
Before configuring PowerHA solution that uses Metro Mirror, ensure that the minimum communication requirements have been met.
Journal planning for Metro Mirror
Journaling is important for increasing recovery time for all high availability solutions. In the case of IBM System Storage® based technologies, such as Metro Mirror, it is vital that journaling be used to force write operations to external storage units, since mirroring of data occurs outside of IBM i storage.
Backup planning for Metro Mirror
With Metro Mirror, you can use the FlashCopy® feature to create a copy of data stored in IBM System Storage external storage units.
Performance planning for Metro Mirror
You should understand these performance considerations prior to configuring Metro Mirror.