Вот по кластеру The Cluster service controls server cluster operations and manages the cluster database. A cluster is a collection of independent computers that act as a single computer. Managers, programmers, and users see the cluster as a single system. The software distributes data among the nodes of the cluster. If a node fails, other nodes provide the services and data that were formerly provided by the missing node. When a node is added or repaired, the cluster software migrates some data to that node.
System service name: ClusSvc
CLUSTER SERVICE
Application
Protocol
Ports
Cluster Service
UDP and DTLS¹
3343
Cluster Service
TCP
3343 (This port is required during a node join operation.)
RPC
TCP
135
Cluster Administrator
UDP
137
Randomly allocated high UDP ports²
UDP
Random port number between 1024 and 65535
Random port number between 49152 and 65535³