TRITECH SOFTWARE SYSTEMS -2015 - Laserfiche WebLink

Home Browse Search

Chapter 3 - System Components 13.2 INFORM CAD HOT STANDBY/DISASTER SERVER TriTech has approved a third party Disaster Recovery software that is used to automatically update Inform CAD Database information and Inform CAD File Share information between the production database server on either an on -site Hot Standby Server (HSB) or remote Disaster Server. iB3 AI NI&INi1i[adU1:[9YI& —11�III ]5 All on -site HSB acts as a replacement for the production database server. This provides an on -site redundant server for those sites that operate standard servers and a third level of redundancy for sites that operate Stratus fault tolerant servers. The HSB Server reuses the production server's business server(s) and workstation(s) and there are minimal manual configurations that have to be executed on the production database server, such as database consistency check. This is facilitated by the Disaster Recovery Software Areserve High Availability's (HA) ability to update the DNS record of the production server in DNS. The update of the DNS record allows the business server(s) and workstation(s) to continue to point to the production database server's host name and launch CAD. At this time, TriTech configures the system for manual intervention to initiate a failover. The System Administrator can do manual activation of the failover process remotely. The TriTech.Launch icon on the workstations and interfaces are pointed to the HSB database server's name and no workstation change or re -direction is needed after a successful failover to the HSB Server. Once the manual server failover has been activated, the Inform CAD workstations and interfaces are restarted. To failback — the replication between the Master and Replica is reversed and another failover is manually triggered once the two servers are back in sync. The system is then reset to the original configuration to synchronize files and data. While the Stratus Active Service Architecture would be the recommended method, the HSB Server has been tested to allow for rolling upgrades of OS service packs and server firmware on the primary server. This would reduce system downtime during such scheduled upgrades to a few minutes. Upgrades of full OS versions may be so extensive that a rolling upgrade may not be possible in all situations. Please contact TriTech for additional information regarding specific OS versions. 13.2.2 INFORM CAD DISASTER SERVER A remote Disaster Server acts as a replacement for the production database server, This provides an off -site redundant server, but the system requires its own set of business server(s) to operate the system from the remote site. The WAN connection between production and Disaster Server sites should be a minimum of Tl (1.544Mbps) speed to allow for the timely update of files and data. This is only for the data update and is not sufficient bandwidth to operate a substantial number workstations and interfaces from one site connected to another. At this time, the system will be configured for a manual intervention to activate a failover. Manual activation of failover can be done remotely by the System Administrator. There are manual steps that are needed to activate a remote Disaster Center. TriTech will configure Areserve to perform many of the manual steps such as copying preconfigured files and executing batch files. These are based upon the need to change certain database and file settings before the system can be activated. These settings can be pre -configured in advance to allow for a simplified process for the System Administrator. These include the following: / Preconfigured Files — These files must be preconfigured for the Disaster System and should be stored on the Disaster Server. Areserve post failover will copy the files into their respective location in the Inform CAD File Share. — Launch - Maintaining a preconfigured Launch The contents of this material are confidential and proprietary to TriTech Software Systems, Inc. and may not be reproduced, published or disclosed to others without the prior written consent of TriTech Software Systems, Inc. ©2015 TriTech Software Systems