--- title: "Always-On Terminal: OT Server High Availability | Citia" description: "Citia Micro-Webinar #02 (6 Nov 2026) covered high availability for TAS OT servers: automatic failover across server, network and database layers." url: https://citia-engineering.com/en/webinars/micro-webinar-02-always-on-terminal-high-availability language: en updated: 2026-11-06 type: webinar site: Citia Engineering Indonesia --- # Always-On Terminal: high availability for OT servers in a terminal automation system Citia Micro-Webinar #02, held online on 6 November 2026, covered triple-layer auto failover for TAS OT servers: server, network and database. | Field | Value | | --- | --- | | Date | 2026-11-06 | | Time | 14.00 WIB | | Speakers | Fadli (Management System Engineering, Citia) | | Status | Held | ## Topics covered - Why the OT server at a terminal must stay up - Server failover: from the main unit to the standby - Network redundancy: backup paths and switches - Database replication to keep transaction data intact In short Always-On Terminal was the second Citia Micro-Webinar, a short online session for people who keep fuel terminal systems running. Its subtitle, Triple-Layer Auto Failover: Server, Network & Database , names the three layers it walked through. A terminal automation system runs on OT servers that host the applications operators use every shift. At Padalarang, for example, the hardware Citia maintains under its TAS lifecycle support includes the TAS server, the FD-Flow PC and the gate interface PC. When one of those machines stops, the work that depends on it stops too. The session started from that question, why the OT server has to stay up, and then took each layer in turn: moving service from the main server to a standby unit, giving the network a backup path and a backup switch, and replicating the database so transaction records stay complete when a server or link changes over. For the wider picture of what a TAS does, see the Citia terminal automation system page and the earlier session on TAS and control system reliability . - Citia Micro-Webinar #02 took place online on Friday 6 November 2026 at 14.00 WIB and ran for 15 to 20 minutes, free of charge. - The theme was high availability for OT servers in a terminal automation system (TAS), built on triple-layer auto failover: server, network and database. - Fadli from Management System Engineering at Citia presented the session for maintenance, instrumentation, automation, IT/OT and terminal operations teams. - No recording has been published yet. This page will say so when material or a recording becomes available. - 6 Nov 2026 Date Friday - 14.00 WIB Time Western Indonesia Time - 15-20 min Duration Short format - Online Format Free of charge - Backup network path and switch: Network redundancy: a backup path and a backup switch. - Standby OT server: Server failover: service moves from the main unit to the standby. - Replica database: Database replication keeps transaction data intact. ## Who the session was for - Maintenance: Teams who keep terminal equipment and servers in service. - Instrumentation: Engineers who own the field signals that reach the servers. - Automation: People who configure controllers, SCADA and TAS applications. - IT/OT: Staff who run the servers, network and databases. - Terminal operations: Supervisors whose shift depends on the system being up. ## Speaker Fadli , Management System Engineering, Citia. The session was part of the Citia Micro-Webinar series: short talks on one practical topic from terminal work, open to anyone who registers. - Series: Micro-Webinar #02 - Format: Online, free - RSVP: siTia on WhatsApp, reply HADIR - Recording: Not published yet ## Session timeline This session has ended: RSVP for #02 ran through siTia on WhatsApp (+62 813-2206-507, reply HADIR). The same RSVP is open now for Micro-Webinar #03 on Friday 21 November 2026 at 14.00 WIB. - 23 Oct 2026: Earlier session on TAS reliability. Reliable terminals: TAS and control system reliability. - 6 Nov 2026, 14.00 WIB: Micro-Webinar #02 held online. Always-On Terminal, 15 to 20 minutes. - 13 Nov 2026: Page updated. No recording published yet. - 21 Nov 2026, 14.00 WIB: Next: Micro-Webinar #03. MOV not read in SCADA, on Microsoft Teams. ## Common questions Q: What was Citia Micro-Webinar #02 about? A: It covered high availability for OT servers in a terminal automation system. The four topics were why the terminal OT server must stay up, server failover to a standby unit, network redundancy with backup paths and switches, and database replication to keep transaction data intact. Q: Is there a recording of the Always-On Terminal webinar? A: Not yet. Citia has not published a recording or slides for this session, and this page will be updated if either becomes available. Q: What does triple-layer auto failover mean? A: In the session title it means automatic failover on three layers: the server, the network and the database. The server layer moves service to a standby unit, the network layer uses a backup path and switch, and the database layer replicates data so transactions are not lost. Q: Who was the session for? A: Maintenance, instrumentation, automation, IT/OT and terminal operations staff, as listed on the official poster. Q: When is the next Citia Micro-Webinar? A: Micro-Webinar #03 runs on Friday 21 November 2026 at 14.00 WIB on Microsoft Teams. Its topic is troubleshooting motor-operated valves that SCADA cannot read, from the gateway to the field device. ## Sources and further reading 1. Terminal automation system (TAS), Citia (https://citia-engineering.com/en/products/terminal-automation-system) 2. Padalarang TAS lifecycle support, Citia (https://citia-engineering.com/en/projects/padalarang-tas-lifecycle) 3. Reliable terminals: TAS and control system reliability, Citia, 2026-10-23 (https://citia-engineering.com/en/webinars/reliable-terminals-tas-reliability) Planning server redundancy at a terminal?: Tell siTia which servers, network and database your TAS runs on, and a Citia engineer will help you map the failover options. ## Contact - Company: PT Citia Engineering Indonesia - siTia - Virtual Assistance: [WhatsApp +62 813-2206-507](https://wa.me/628132206507). siTia answers questions about our products, projects and enquiries on WhatsApp. Replies are automated, and a person from the Citia team follows up. - Email: services@citiaengineering.com - Phone / WhatsApp (siTia): +62 813-2206-507 - Location: Bandung, Indonesia [Contact Citia](https://citia-engineering.com/en/contact.md) ## Structured data (JSON-LD) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://citia-engineering.com/#organization", "name": "Citia Engineering Indonesia", "legalName": "PT Citia Engineering Indonesia", "alternateName": "Citia", "url": "https://citia-engineering.com", "logo": { "@type": "ImageObject", "url": "https://citia-engineering.com/media/citia-logo.png", "width": 950, "height": 328 }, "description": "Citia is an engineering and system integration company in Bandung, Indonesia. 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