Which statement best defines data tiering?

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Multiple Choice

Which statement best defines data tiering?

Data tiering is about moving data between different storage media to match how it is used. The idea is to keep frequently accessed data on faster, more expensive storage (like SSDs) and place less-accessed data on slower, cheaper storage (like HDDs), with the system automatically shifting data as access patterns change. That automatic, policy-driven movement between performance tiers is what defines data tiering. Why the other ideas don’t fit: allocating storage on demand as data is written describes dynamic provisioning, not tiering. Using RAM to speed up access refers to caching or in-memory storage, not moving data between tiers. Copying data to a remote site is about replication or backup, not organizing data across local storage tiers.

Data tiering is about moving data between different storage media to match how it is used. The idea is to keep frequently accessed data on faster, more expensive storage (like SSDs) and place less-accessed data on slower, cheaper storage (like HDDs), with the system automatically shifting data as access patterns change. That automatic, policy-driven movement between performance tiers is what defines data tiering.

Why the other ideas don’t fit: allocating storage on demand as data is written describes dynamic provisioning, not tiering. Using RAM to speed up access refers to caching or in-memory storage, not moving data between tiers. Copying data to a remote site is about replication or backup, not organizing data across local storage tiers.

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