A Shift in Data Storage Todd Dinkelman Micron Technology, Inc.

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1800 1600 1400 1200 1000 800 600 400 200 0 Typical PC File Transfers Less than 4KB 4KB to 16KB Avg. Disk Bytes Per Read/Write 16KB to 32KB 32KB to 64KB Transfer Size 64KB to 128KB 128KB to 256KB Greater than 256KB Reads Writes Santa Clara, CA USA August 2008 20
SSD Endurance Calculation � Write amplification and wear-leveling efficiency must be accounted for when calculating SSD lifetime Life in Years = NAND Cycles * SSD Capacity Amplification Factor * GB/Year Santa Clara, CA USA August 2008 21
Page 1 and 2: SSDs A Shift in Data Storage Todd D
Page 3 and 4: What is Being Called an SSD? � US
Page 5 and 6: SATA interface connector The Simpli
Page 7 and 8: SSDs in Computing Relative Latency
Page 9 and 10: MLC and SLC Differences � SLC •
Page 11 and 12: $/GB SSD Average Price/GB 1.8" HDD
Page 13 and 14: NAND Error Rate � Bit Error Rate
Page 15 and 16: Endurance Factors � Wear-leveling
Page 17 and 18: Wear-Leveling Example � MLC devic
Page 19: Write Amplification � Additional
Page 23 and 24: Times per Day (Count) 60 50 40 30 2
Page 25 and 26: Summary � SSDs bring many advanta

A Shift in Data Storage Todd Dinkelman Micron Technology, Inc.

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