CompTIA
SG0-001 · Question #429
SG0-001 Question #429: Real Exam Question with Answer & Explanation
The correct answer is A. Single instance storage. Single instance storage (SIS) is a data optimization technique that replaces multiple identical copies of a file with a single stored copy and pointers to it, significantly reducing storage consumption.
Storage Management
Question
The process of replacing a file with a pointer when an identical file is found in more than one location on the host, is which of the following?
Options
- ASingle instance storage
- BPost-process deduplication
- CInline deduplication
- DAppliance based deduplication
Explanation
Single instance storage (SIS) is a data optimization technique that replaces multiple identical copies of a file with a single stored copy and pointers to it, significantly reducing storage consumption.
Common mistakes.
- B. Post-process deduplication performs data deduplication after the data has been written to storage, which describes the timing of the process, not the specific mechanism of replacing files with pointers.
- C. Inline deduplication performs data deduplication as data is being written to storage, which, like post-process deduplication, describes the timing and not the specific method of file replacement with pointers.
- D. Appliance based deduplication refers to the implementation method (using a dedicated hardware appliance) rather than the specific technical process of how duplicate files are handled and replaced with pointers.
Concept tested. Data deduplication - Single Instance Storage
Topics
#single instance storage#data deduplication#storage optimization
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