MirrorName is an alphanumeric string. The maximum length is 50 characters.
During instance startup, if the instance is deploying as the primary member of a new mirror, MirrorSetName is the name for the new mirror. If the instance is deploying as a backup or DR async member, MirrorSetName is the name of the mirror this member is joining.
For information about how to use this parameter to create a mirror as part of initial deployment, see Using Configuration Merge to Deploy Customized InterSystems IRIS Instances.
Using This Parameter
You can change MirrorSetName by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book).