Characterizing and Emulating FDP SSDs with WARP

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" summary

Presents WARP, an open FPGA‑based emulator and study that shows FDP SSDs sustain near-1 WAF only when RUH isolation matches object lifetimes; misclassification, RUH interference and premature reclamation make WAF climb. WARP reproduces hardware WAF trends, exposes per‑RUH dynamics and tunable geometry (RU size, overprovisioning) and lets authors test firmware policies. Key measurements: a single noisy RU with ~5% of writes can cause ~20% of total write amplification; custom GC and placement policies in WARP reduce WAF beyond current devices.

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" chapters (11)

1. 0:00WARP and FDP SSDs intro
2. 3:21FDP SSD performance questions
3. 5:31Characterization setup and workloads
4. 8:22FDP benefits vs workload skew
5. 9:28Firmware impact on FDP
6. 10:31FDP SSD limitations
7. 11:14WARP emulator for FDP
8. 13:23WARP validation vs hardware
9. 14:09Noisy RU behavior
10. 15:13Premature reclamation issues
11. 16:17Summary and Q&A

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