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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 an embedded Guest that is associated with a 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 by 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.

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