JEDEC SSD Specifications Explained

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Key Definitions ‣ Endurance failure – A failure caused by endurance stressing. ‣ Endurance rating (TBW rating) – The number of terabytes that may be written to the <strong>SSD</strong> while still meeting the requirements.
Key Definitions ‣ Erase block – The smallest addressable unit for erase operations, typically consisting of multiple pages. ‣ Page – A sub-unit of an erase block consisting of a number of bytes which can be read from and written to in single operations, through the loading or unloading of a page buffer and the issuance of a program or read command.
Page 1 and 2: JEDEC SSD Specifications Explained
Page 3 and 4: What do these standards include?
Page 5: Reference Documents ‣ JESD22-A117
Page 9 and 10: Key Definitions ‣ Solid state dri
Page 11 and 12: Key Definitions ‣ Write amplifica
Page 13 and 14: # corrupt sectors per drive UBER eq
Page 15 and 16: UBER determination ‣ Although the
Page 17 and 18: WAF ‣ Factors that impact WAF: -
Page 19 and 20: WAF example The figure shows one NA
Page 21 and 22: WAF example Note that had the examp
Page 23 and 24: Application classes ‣ Current app
Page 25 and 26: Endurance rating The SSD manufactur
Page 27 and 28: Temperatures and data retention ‣
Page 29 and 30: Endurance rating example The estima
Page 31 and 32: Endurance rating example The NAND c
Page 33 and 34: Verification goals ‣ Reasonable t
Page 35 and 36: Direct versus extrapolation ‣ Bot
Page 39 and 40: Direct method ‣ Best method but n
Page 41 and 42: General requirements for extrapolat
Page 43 and 44: Accelerated write rate through modi
Page 45 and 46: Extrapolation of FFR and bad- locat
Page 47 and 48: Reduced-capacity SSD ‣ Qualificat
Page 49 and 50: FFR and UBER estimation from compon
Page 51 and 52: Endurance workloads ‣ Client work
Page 53 and 54: Enterprise workload ‣ Several wor
Page 55 and 56: Questions

JEDEC SSD Specifications Explained

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