SK0-004 · Question #209
Which of the following will protect data loss against catastrophic multiple physical drive failure?
The correct answer is C. Tape backup. Tape backup is the only solution listed that stores data on physically separate, removable media that survives a catastrophic failure destroying all on-site drives simultaneously.
Question
Which of the following will protect data loss against catastrophic multiple physical drive failure?
Options
- ARAID 10
- BSnapshot
- CTape backup
- DRAID 5
How the community answered
(42 responses)- A2% (1)
- B5% (2)
- C90% (38)
- D2% (1)
Why each option
Tape backup is the only solution listed that stores data on physically separate, removable media that survives a catastrophic failure destroying all on-site drives simultaneously.
RAID 10 can tolerate multiple drive failures only if no two failed drives come from the same mirrored pair; a catastrophic event that destroys the entire array results in total data loss.
Snapshots reside on the same physical storage system as the source data and are destroyed along with it in a catastrophic failure.
Tape backup writes data to removable media that can be stored off-site, making it completely independent of the failed storage hardware. In a catastrophic scenario where multiple physical drives fail at once due to fire, flood, or total array failure, tape is the only option listed that remains intact and can be used to restore data.
RAID 5 uses single distributed parity and can survive only one drive failure; losing two or more drives simultaneously causes total data loss.
Concept tested: Tape backup as protection against catastrophic data loss
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-fault-tolerance
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