Application Resilience Agenda What is High Availability Connexall

Application Resilience

Agenda • • • What is “High Availability” Connexall Server Specification Virtualization VMware HA vs. Connexall HA What is Connexall HA? Best Practices

High Availability Cluster HA Cluster Failover Cluster Groups of Servers reliably utilized with minimum down-time. • Operates by harnessing redundant servers in groups or clusters • Provides continued service when system components become unavailable. • •

Virtualization • Reduction in Cost • Easily rebuilt or moved • Utilize VM resouce allocation tools – CPU – Memory – Disk Space • Management (V-Motion) • Connexall High Availability fully Supported

VMware HA • VMware HA – Reserved for Applications w/o HA capabilities – OS Side Failover – Must have Virtualization Suite – 3 rd Party Tools may be required – Support for real-time application?

Connexall HA – Layer 7 Connexall HA Operating System (Virtualization, Clustering) Server (Disk, Power, etc. ) Network Availability (HSRP, Load Balancing, etc. ) Input/Output Systems (multi -client capable); MSSQL Reporting

Benefits Support “per client” Failover Heartbeats Mechanisms to protect from False Failovers Replicates active alarm/callpoints in real-time Replicates the entire CNS configuration database. • Provides monitoring and fail-over notification • Reporting of system status • • •

What is Connexall HA? • 3+ Node Primary/Standby Cluster with real-time data synchronization and auto failover capability. Primary Standby Clients

Server Deployment & Design • Server Specifications • Design for Expansion in mind • No “cookie cutter” approach – Must look at specific Application(s)

Components Component Description CNS Primary CNS Standby CQC CNS Enterprise server configured as HA-Primary. CNS Enterprise server configured as HA-Standby. Connexall Quorum Client - Monitors CNS HA servers and coordinates all fail-over decisions/actions. Server Synchronization Client - Provides event and database synchronization between Active and Standby servers. SSC CDC Connexall Database Client - Exports Connexall activity reporting data to an external MS-SQL database. FVC (optional) Fail-over Veto Client - Provides fail-over veto capability to help mitigate the chance of false fail-overs.

Monitor Synchronize Active Standby Active Offline Clients

Best Practices for Application Resilience

• Scheduled backups DMU/DMS

• Connexall Services Manager

Windows Patching • • Disable automatic Windows Updates Establish time and date for Patching Inform Connexall Tech Support in advance Patch 1 server at a time

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