This is a registry value set and is just one option you can set at the host OS layer effectively probing the target on all paths every 30 seconds. Set to 0 by Windows Unified Host Utilities 7.1 and se...This is a registry value set and is just one option you can set at the host OS layer effectively probing the target on all paths every 30 seconds. Set to 0 by Windows Unified Host Utilities 7.1 and set to 1 in version 7.2 ( Please check latest documentation for any change in this . ) Please consult these technical support resources before making any changes to these parameters as any unsupported configuration by all vendors can cause loss of data access.