Dell EMC Associate – Information Storage and Management v5 — Question 9

What is true about Storage Class Memory (SCM)?

Answer options

• A. SCM is slower than DRAM but read and write speeds are faster than flash.
• B. SCM adds a new tier of SAS performance at memory-like cost.
• C. SCM read and write speeds are slower than hard disk drives.
• D. SCM is faster than cache memory but slower than solid state drives.

Correct answer: A

Explanation

Option A is correct because SCM is indeed slower than DRAM but offers faster read and write speeds compared to flash memory. Option B is incorrect as SCM does not specifically add a new tier of SAS performance; it's about memory-like performance. Option C is wrong because SCM typically outperforms hard disk drives in terms of speed. Option D is also incorrect since SCM is generally faster than solid state drives, not slower.