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HCIA Storage Practice Exam

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In tiered storage, which statement about SSDs and NL-SAS drives is true?
Correct Answer:
SSD drives belong to the high-performance tier.
Explanation:
In tiered storage, data is matched to media based on how fast it needs to be accessed. SSDs deliver fast, random I/O with very low latency, making them the premier choice for the high-performance tier. NL-SAS drives are spinning hard disks optimized for larger capacity and cost efficiency, but they have higher latency and lower IOPS than SSDs, so they sit in a lower tier. Because of these characteristics, the statement that SSDs belong to the high-performance tier is the accurate one. The other options mischaracterize NL-SAS or SAS drives relative to tiering performance.

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