MixedDomainFromNodeToSwitch_Alert seen from switch attached NS224 shelf

MixedDomainFromSwitchToShelf_Alert messages:

[node_name: schmd: hm.alert.raised:alert]: Alert Id = MixedDomainFromSwitchToShelf_Alert , Alerting Resource = switch_name-a(ABC123456D7) raised by monitor system-connect

[node_name: schmd: hm.alert.raised:alert]: Alert Id = MixedDomainFromSwitchToShelf_Alert , Alerting Resource = switch_name-b(ABC123456D8) raised by monitor system-connect

• System health alert: 

::> system health alert show
            Node: node_name
        Alert ID: MixedDomainFromSwitchToShelf_Alert
        Resource: Switch name: switch_name-a(ABC123456D7)
        Severity: Minor
 Indication Time: Tue Jan 10 12:10:02 2023
        Suppress: false
     Acknowledge: false
  Probable Cause: Storage Switch switch_name-a is connected to shelves 3.20,
                  3.30 with mixed domains.
 Possible Effect: This issue will affect conversions to direct-attached
                  storage.
 Corrective Actions: Connect the switch node_name to both shelves with the
                  same storage domain, following the guide applicable to
                  your shelf.
            Node: node_name
        Alert ID: MixedDomainFromSwitchToShelf_Alert
        Resource: Switch name: switch_name-b(ABC123456D8)
        Severity: Minor
 Indication Time: Tue Jan 10 12:10:02 2023
        Suppress: false
     Acknowledge: false
  Probable Cause: Storage Switch switch_name-b is connected to shelves 3.20,
                  3.30 with mixed domains.
 Possible Effect: This issue will affect conversions to direct-attached
                  storage.
 Corrective Actions: Connect the switch node_name to both shelves with the
                  same storage domain, following the guide applicable to
                  your shelf.
2 entries were displayed.

• "system health subsystem show" shows "SAS-connect_Cluster  degraded" after system reboot Example:

::> system health subsystem show
　Subsystem Health
　----------------- ------------------
　SAS-connect ok
　...
　FHM-Bridge ok
　SAS-connect_Cluster　 degraded
　13 entries were displayed.

::*> system health subsystem show -instance -subsystem SAS-connect_Cluster
                Subsystem: SAS-connect_Cluster
                   Health: unknown
     Initialization State: start_discovery
Number of Outstanding Alerts: 0
 Number of Suppressed Alerts: 0
                     Node: node_name
  Subsystem Refresh Interval: 30m