SCNET · Enterprise IT · Ankara, Türkiye
Disaster recovery is not about holding a second copy; it is about knowing which service comes back in which order when an outage hits. Sanal Çekirdek designs the infrastructure around that order.
Systems that work individually may not work together. Without a dependency map, recovery is a jigsaw with an unknown sequence.
A service does not come up without the identity, network, database and integration layers it depends on. The map makes that chain visible and the recovery order is derived from it. An order is not considered valid until a rehearsal confirms it.
Synchronous replication minimizes data loss but imposes distance and latency limits; asynchronous replication gives flexibility but leaves a loss window. The choice follows the system's recovery objective and the real measured latency between the two locations.
Declaring failover is a business decision, not a technical one; who declares it and at what threshold is written in advance. Failback is where most plans stop short: how and when the data produced at the secondary site returns to the primary.
Until it is rehearsed, a plan is an assumption. Rehearsals are staged from tabletop scenarios through to real failover; each round compares measured duration against the objective and updates the plan.
No. Backup returns the data; disaster recovery returns the service. They complement each other — an organization with backups but no recovery order owns its data but not its service.
The recovery objective and the risk scenario decide. If a regional outage is in scope, a separate location is required; for a hardware-failure scenario alone, high availability within one site may be enough.
A staged approach prevents that. Tabletop and partial rehearsals do not affect production; a full failover rehearsal runs in a planned window with the failback path held ready.
When did you last rehearse your recovery order? Share your critical service list and we will start with the dependency map.
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