This Gauge32 reports the policy-resolution depth at which this PSU policy's settings were actually determined - essentially how far up the UCS organizational hierarchy UCS Manager had to look to find an applicable value. It matters to an admin troubleshooting why a server unexpectedly inherited a different PSU redundancy setting than expected, since a nonzero policyLevel signals the value came from a parent org rather than the local one. A concrete reading of policyLevel 2 would mean the effective policy was inherited two organizational levels up from where the service profile lives.