What are the benefits of the multi-stream technology supported by Dorado? (Multiple choice)

Question

Options

• ALess write application
• BLonger SSD service life
• CNo garbage collection overhand on SSDs.

• A
  100% (39)

Explanation

All three options are correct because multi-stream technology (used in Huawei Dorado's all-flash arrays) separates I/O writes into distinct streams based on data lifetime or application type, keeping similar-lifetime data physically grouped on the same NAND blocks.

• A is correct - By grouping data with matching lifetimes into the same stream, entire blocks can be invalidated together rather than mixing hot and cold data. This means the SSD avoids rewriting still-valid pages during cleanup, directly reducing write amplification.
• B is correct - Write amplification is the primary driver of SSD wear (measured in P/E cycles). Since multi-streaming reduces write amplification, fewer total NAND writes occur over time, directly extending SSD service life.
• C is correct - When all pages in a block belong to the same stream and expire together, the controller can erase the block in one shot with no valid-data migration needed, eliminating garbage collection overhead.

Since all three choices are correct, there are no distractors to refute here.

Memory tip: Think of multi-stream as "sort your recycling before throwing it out." When similar items (same-lifetime data) are grouped together, cleanup (GC) is instant, nothing useful gets discarded in the process (less write amplification), and the bin (SSD) lasts much longer.

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