Knowledgebase ProCall Enterprise Current: High availability/failure safety and scalability High availability/failure safety and scalability ProCall DataCenter Page: ProCall DataCenter ProCall Enterprise Page: Scalability: Hardware recommendations for system expansion ProCall Enterprise Page: Support for VMware vSphere High Availability (HA) Page: Best Practice: Using Active Directory replication with round-robin DNS for MetaDirectory or ProCall Enterprise Page: Best practice: Scalability and resilience with ProCall Enterprise via dedicated UC MediaServers Page: Best practice: Increase MetaDirectory availability and use DNS round robin MetaDirectory Page: Error analysis: Search in MetaDirectory returns no results or results with a significant delay Page: Best practice: Increase MetaDirectory availability and use DNS round robin