The Metro Volume session-related configuration is available in PowerStore Manager Protection > Metro. This page allows the management of each Metro Volume session and shows the current session witness and corresponding witness state.
There are six possible Metro Volume session witness states:
- Initializing – The witness is being initialized, but not engaged.
- Disengaged – The witness is initialized, but not engaged. It’s the valid state during a fracture as the witness is not involved. While in this state on both sides, Metro Volume will resort to utilizing the polarization mechanism for Metro Volume availability.
- Engaged – The witness is engaged. This is the normal condition, and it indicates the witness will be leveraged by the Metro Volume session in an infrastructure failure scenario.
- Disengaged Invalid Configuration – Not engaged due to incorrect witness configuration on the preferred system of the Metro Volume session.
- Disengaged Failed To Initialize – There is a problem with the Metro Volume session because it failed to initialize with the witness.
- Unconfigure In Progress – The witness is in the process of being unconfigured for the Metro Volume session.
Figure 46. Metro Volume session witness states of Engaged
Figure 47. The session witness state can also be observed while drilling down into the Metro Volume detail