Closing a Business-Continuity Gap With Tested Failover

A multi-branch retail bank's core deposits ASE instance had no failover path that had ever actually been tested. OptiSol built Warm Standby replication and proved it under a real RTO/RPO test.

Retail Bank Warm Standby Replication Server ASE 15.x

RTO 12 min

Verified failover time

Industry

Multi-branch retail bank

6 Weeks

Duration

A Continuity Plan That Existed Only on Paper

Untested HA

Failover Had Never Actually Been Run

A secondary ASE server existed in the data center for the core deposits instance, but no working replication or standby configuration connected it — failover existed as a line item in the disaster recovery plan, not a tested capability.

No RTO/RPO Baseline

No Agreed Recovery Targets

Leadership had never been given a concrete recovery time objective or recovery point objective for the deposits system — audit and compliance reviews kept flagging this as an open risk with no owner.

Regulatory Pressure

Examiner Findings Cited the Gap

A recent regulatory examination had specifically flagged the absence of a tested database failover procedure for the core banking platform, putting a firm deadline on closing the gap.

Warm Standby, Configured and Then Proven

Every stage of the build ended in a real test — nothing was declared "ready" on the strength of configuration alone.

RTO/RPO Agreement With Leadership

Facilitated a session with business and technology leadership to agree concrete recovery time and recovery point targets for the deposits instance, giving the technical build a defined success criterion.

Warm Standby & Replication Server Setup

Configured Sybase Replication Server with Warm Standby pairing between the primary and secondary ASE instances, including routes and subscriptions for the deposits and transaction databases.

Replication Latency Monitoring

Established continuous monitoring of replication latency and queue depth so any drift toward the agreed RPO threshold would surface before it became a compliance issue.

Scheduled Failover Test

Ran a full failover in a scheduled maintenance window — promoting the standby, redirecting connections, and validating transaction consistency — with the client's operations team observing throughout.

Runbook & Recurring Test Cadence

Documented the failover procedure as a step-by-step runbook and agreed a recurring quarterly test cadence so the capability stays proven rather than degrading silently over time.

12-Minute Verified RTO on a Core Banking System Failover moved from an untested line item in a DR plan to a witnessed, timed recovery — giving leadership a concrete number instead of an assumption.

Regulatory Finding Closed Out in 6 Weeks A prior examination finding on untested failover was resolved with documented evidence, avoiding the compliance exposure of carrying an open finding into the next audit cycle.

A Standing Runbook, Not a One-Time Test The failover procedure and a quarterly test cadence were handed to the operations team, turning a single successful drill into a durable, auditable capability.

Compliance Risk Converted to Continuous Monitoring Replication latency and queue depth are now watched against the agreed RPO threshold, catching drift before it becomes the next audit gap.

The Business Impact

Warm Standby failover tested end-to-end and verified at approximately 12 minutes RTO
Replication Server routes and subscriptions configured for the deposits and transaction databases
Continuous replication latency monitoring in place, tied to the agreed RPO threshold
Documented failover runbook handed to the client's operations team
Quarterly failover test cadence established as a standing operational practice
Prior regulatory examination finding closed out with evidence of a tested procedure

"We'd told our examiner for two cycles that failover was 'in place.' This was the first time we could actually show them a test, a runbook, and a recovery time instead of a diagram." — OptiSol Sybase DBA Lead

Closing a Business-Continuity Gap With Tested Failover