Using SSDs as asecondary cache(sometimes called a “flash cache”) helps:
Improve read performanceby storing frequently accessed data in the faster SSDs.
Reduce latency for read requests because SSDs are much faster than traditional spinning hard drives (HDDs).
Power consumption (A): SSDs do use less power, but the primary goal here is performance.
Data backup (C): SSD cache doesn’t impact backup operations.
Storage capacity (D): This is not the main focus; the SSDs act as a cache layer only.
[Reference:Dell Information Storage and Management Foundations 2023 Study Guide, Section: Storage System Caching Architectures., ]
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