Operational Characteristics of SSDs in Enterprise Storage Systems: A Large-Scale Field...
summary
Study uses NetApp field telemetry covering almost 2 million SSDs over a decade and shows most drives consume <1% of their PE cycles per year so 86% survive with 1k PE for a 5‑year life, supporting QLC transitions. Median write amplification is 7.5, with a few models much higher due to aggressive retention-driven rewrites rather than GC. Typical enterprise drives are read‑dominant (median 4:1 reads:writes) and can see up to 100× higher I/O rates than cloud datacenter SSDs.
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chapters (8)
- 0:00Computer Science UNIVERSITY OF TORONTO
- 0:22Research Questions • Performance and lifespan of SSDs are affected by operational characteristics.
- 2:20Systems Description . We focus on NetApp's enterprise storage systems
- 2:44What are NAND Usage Rates in the field?
- 6:22Write Amplification Factors (WAF) SSDs internally perform housekeeping tasks (garbage collection, wear levelling, etc.) resulting in Write Amplification
- 7:29Write Amplification Factors (WAF) in production?
- 9:30Which factors impact WAF? . Several factors can affect an SSD's write amplification.
- 11:36Enterprise storage systems versus data centers
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