Computer Science · Data Storage and Backup
In enterprise storage systems, how does a 'Copy-on-Write' (CoW) snapshot differ from a traditional backup?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It is stored on a physically separate secondary device.
- 2It initially only stores pointers to data blocks, writing physical copies only when those blocks are modified.✓
- 3It requires the target application or system to be offline during the duplication process.
- 4It creates a full, bit-by-bit clone of the entire storage array immediately.
Correct answer
It initially only stores pointers to data blocks, writing physical copies only when those blocks are modified.
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