Data Backup And Disaster Recovery DRP
The fate of a company is determined not by how resilient its systems are, but by how fast they recover after a fall. An untested backup is merely a piece of hope.
In the digital age, cyberattacks or hardware crashes are not a question of "if", but "when". In the event of a ransomware attack or a fire in the main server room, operational downtime is inevitable. At this point, whether the company can sustain its existence depends on the strength of its Disaster Recovery Plan (DRP).
During a disaster, two fundamental mathematical objectives come into play:
1. RPO (Recovery Point Objective): This is the maximum amount of data loss the company can tolerate. It answers the question, "When the system crashes, how far back in time can we afford to lose?" For a company with a 24-hour RPO, yesterday's backup is sufficient; however, for a stock exchange executing thousands of transactions per second, the RPO target is measured in seconds. 2. RTO (Recovery Time Objective): This is the maximum acceptable time to restore crashed systems and data to make the operation viable again. It answers the question, "How many hours will it take to be able to issue invoices again after systems go down?"The backup architecture (On-premise, Cloud, or Hybrid) is shaped at the intersection of these two objectives. Taking backups alone is not enough; these backups must be physically and network-isolated from the main system (Air-gap), and periodic restoration tests are mandatory.
