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# View SRDF virtual witnesses details

The Virtual Witness feature supports a third party that the two storage systems consult when they lose connectivity with each other, that is, their SRDF links go out of service.

## Prerequisites

Unisphere provides monitoring and management for SRDF/Metro Virtual Witness on Virtual Witness capable storage systems running HYPERMAX OS 5977 Q3 2016 or later.

## About this task

See Understanding Virtual Witness for additional information.

## Steps

1. Select the storage system.
2. Select DATA PROTECTION > Virtual Witness to open the Virtual Witness list view.
3. Select a Virtual Witness instance and click to open the Details view.
   The following properties display:
   - Witness name—User-defined witness name
   - IP/DNS—IPv4 or IPv6 address, or DNS name from embedded Guest that is associated with Virtual Witness instance.
   - Port—Port associated with Virtual Witness instance
   - Alive—Flag to indicate when the Virtual Witness instance is alive.
   - State—State of Virtual Witness instance
   - InUse—Flag to indicate when the Virtual Witness instance is in use.
   - Duplicate—Flag to indicate when the Virtual Witness instance is a duplicate. A duplicate witness is a witness which has the same unique ID as another witness on the storage system, for example, in the case where it was added twice.
   - SRDF Groups—Number of SRDF groups

   There are links to views for objects associated with the Virtual Witness instance. Each group link is followed the name of the group, or by a number, indicating the number of objects in the corresponding view. For example, clicking SRDF Groups opens the view listing the SRDF Groups that are associated with the Virtual Witness instance.