SLC MLC VtVtVtVt VtVtVtVt % Cells
NAND Component Containing up to 64k blocks Flash Drive Page within a block Minimum Read/Write Size ~8kB Block within a NAND component Minimum Erase size ~512kB HostSystem External Interface
Digital Camera Flash Drive Garbage Collection
External Interface
Flash Management Basic Endurance TrueFFS TM Static & Dynamic Wear Leveling Dynamic Bad Block Management Write/Erase Virtual Mapping
Word Excel Powerpoint Outlook Photoshop Random Read 16kB Random Read 32kB Random Write 16kB Random Write 32kB Sequential Read Sequential Write Office 2007 & ADOBE Photoshop CS2 under Vista
External Interface HostSystem Read – Modify - Write NAND Flash does not support over-writing a page
Flash Management Basic Endurance TrueFFS TM Page based Data Allocation Static & Dynamic Wear Leveling Dynamic Bad Block Management Write/Erase Virtual Mapping
External Interface No longer any tie between sectors, pages and blocks ExtremeFFS TM simply writes data where its most convenient NAND Flash does not support over-writing a page Mark old page invalid and write new data to an available location
Flash Management Basic Endurance TrueFFS TM ExtremeFFS TM Static & Dynamic Wear Leveling Dynamic Bad Block Management Write/Erase Virtual Mapping Page based Data Allocation Fully non-Blocking Architecture Usage Based Content Localization
Word Excel Powerpoint Outlook Photoshop Random Read 16kB Random Read 32kB Random Write 16kB Random Write 32kB Sequential Read Sequential Write
Completion time for HDD random access command 1.Command overhead 2.Seek time 3.Rotational latency 4.Data transfer time File System Application
*Industry averages, not representative of a specific product
1x = 150kB/s In Digital Photography Even in Flash Memory
2.5 HDD* Mobile SSD* IOPS_RIOPS_WRPMIOPS_RIOPS_WPC_IOPSvRPM 2006/741425,4005, ~1, ,20010, ~10, ,20020, ~40,000 …and were just getting started *Industry averages, not representative of a specific product
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