Logical Failure vs. Physical Failure
There are two types of data failures: [br-xs] logical failures and physical failures.
About Logical Failures
A logical failure refers to a situation where there is no hardware issue with the storage media, but the data stored on it is corrupted.
Logical failures are categorized into three levels: mild, moderate, and severe.
Mild Logical Failure: File System Failure (Corruption or Loss)
Moderate Logical Failure: Formatting (Initialization),File Deletion,RAID Deletion
Severe Logical Failure: caused by multiple factors, requiring advanced analysis for recovery. Complete formatting or catastrophic overwriting.
About Physical Failures
A physical failure refers to a situation where there is a hardware issue with the storage media.
Mild Physical Failure
A small number of bad sectors are present.
Moderate Physical Failure
A failure with multiple read/write errors.
Severe Physical Failure
Severe hardware damage, such as head or media damage, requiring the opening of the hard disk.
Data corruption or duplication failures make recovery extremely difficult, requiring advanced equipment and expertise.
Devices that have already undergone recovery operations, such as head replacement or hard disk opening by another company.