CompTIA Server+ (SK0-005)Server AdministrationHard
A server administrator is preparing to decommission a server that contains sensitive customer data. Before the server is physically removed from the data center, the administrator must ensure that all data on its hard drives is irrecoverably destroyed to prevent unauthorized access. Which of the following methods is the most secure and appropriate for this task?
- AUsing a data sanitization tool to overwrite the drives multiple times.
- BPhysically removing the hard drives and storing them in a locked cabinet.
- CDeleting all files and emptying the recycle bin.
- DPerforming a quick format of the hard drives.
Show answer & explanationAnswer & explanation
Correct answer: A. Using a data sanitization tool to overwrite the drives multiple times.
Overwriting the drives multiple times with a data sanitization tool is the most secure software-based method to render data irrecoverable. Simple deletion or quick formats only remove pointers to data, leaving the actual data recoverable.
Why the other options are wrong
- B. While physical removal is good, the drives still contain sensitive data and need to be sanitized or physically destroyed before secure storage or disposal.
- C. Deleting files only removes pointers; data remains recoverable with forensic tools.
- D. A quick format only removes the file system table, making data easily recoverable.
Data Sanitization
The process of irreversibly destroying or altering data on storage media to make it unrecoverable by any means.
- Crucial for protecting sensitive information.
- Methods include overwriting, degaussing, and physical destruction.
- Compliance with regulations (e.g., GDPR, HIPAA) often requires specific sanitization levels.
Memory trick: Sanitization wipes the slate clean, ensuring data never returns.