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5 result(s) for HotAndMirrored

• OPC-10000-4 – OPC Unified Architecture - Part 4: Services
  6.6.2.2 RedundantServerSet Requirements
  redundant system regarding synchronization: EventIds: Each UA Server in a Transparent ( 6.6.2.3 ) and HotAndMirrored ( 6.6.2.4.5.5 ) RedundantServerSet shall synchronize EventIds to prevent a Client from mistakenly processing the same event multiple ... that Clients shall be prepared for lost continuation points. Servers in Transparent and HotAndMirrored Redundancy sets shall synchronize continuation points and they may do so in other modes
• OPC-10000-4 – OPC Unified Architecture - Part 4: Services
  6.6.2.4.1 Overview
  unique ApplicationUris . The Server also has additional Failover modes of Cold , Warm , Hot and HotAndMirrored . The Client shall be aware of the RedundantServerSet and shall be required to perform some ... provided in 6.6.2.4.5.2 .for Cold , 6.6.2.4.5.3 for Warm , 6.6.2.4.5.4 for Hot and 6.6.2.4.5.5 for HotAndMirrored . A Client needs to be able to expect that the SourceTimestamp associated with a value
• OPC-10000-4 – OPC Unified Architecture - Part 4: Services
  6.6.2.4.4 Server Failover modes
  returns to the RedundantServerSet with an appropriate ServiceLevel to indicate that it is available. HotAndMirrored HotAndMirrored Failover mode is where Failovers are for Servers that are mirroring their internal states
• OPC-10000-4 – OPC Unified Architecture - Part 4: Services
  6.6.2.4.5.1 General
  Redundancy Failover actions Failover mode and Client options Cold Warm Hot (a) Hot (b) HotAndMirrored On initial connection in addition to actions on Active Server : Connect to more than ... Redundancy . This choice is up to the Client . In the case of Failover mode HotAndMirrored , the Client shall not use Failover mode Hot or Warm as it would generate unnecessary
• OPC-10000-4 – OPC Unified Architecture - Part 4: Services
  6.6.2.4.5.5 HotAndMirrored
  HotAndMirrored A HotAndMirrored Failover mode is where a Client only connects to one Server in the RedundantServerSet because the Server will share this session/state information with the other Servers ... illustrate the behaviour a Client would perform when communicating to a Server in HotAndMirrored Failover mode. The monitor connection logic is defined in 6.7 . Figure 32 - HotAndMirrored Failover This Failover