Can you explain the concept of Fail Safe and its application in fault-tolerant systems?

The Fail Safe concept means that when an error or failure occurs, the system switches to a safe state, preventing catastrophic consequences.

Application in systems:

• In case of failure, the system limits functionality but does not completely crash.
• Backup and recovery mechanisms are used.
• For example, in a banking system, transactions are delayed when communication is lost to avoid data loss.

Thus, Fail Safe helps minimize damage and ensures stability even in the presence of errors.