Table 14 Fault recovery time comparison (in Seconds).

From: Secure and fault tolerant cloud based framework for medical image storage and retrieval in a distributed environment

Method

Single Server Failure

Multi-Server Failure

Traditional CBIR48

Data loss

Data loss

Blockchain-based Storage50

8.5s (consensus delay)

15.2s (replication overhead)

SFMedIR (Proposed)

2.8s (shadow retrieval)

6.3s (threshold-based reconstruction)

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