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SLC MLC 10 11011000 VtVtVtVt VtVtVtVt % Cells.

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Presentation on theme: "SLC MLC 10 11011000 VtVtVtVt VtVtVtVt % Cells."— Presentation transcript:

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5 SLC MLC VtVtVtVt VtVtVtVt % Cells

6 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

7 Digital Camera Flash Drive Garbage Collection

8 External Interface

9 Flash Management Basic Endurance TrueFFS TM Static & Dynamic Wear Leveling Dynamic Bad Block Management Write/Erase Virtual Mapping

10 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

11 External Interface HostSystem Read – Modify - Write NAND Flash does not support over-writing a page

12 Flash Management Basic Endurance TrueFFS TM Page based Data Allocation Static & Dynamic Wear Leveling Dynamic Bad Block Management Write/Erase Virtual Mapping

13 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

14 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

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19 Word Excel Powerpoint Outlook Photoshop Random Read 16kB Random Read 32kB Random Write 16kB Random Write 32kB Sequential Read Sequential Write

20 Completion time for HDD random access command 1.Command overhead 2.Seek time 3.Rotational latency 4.Data transfer time File System Application

21 *Industry averages, not representative of a specific product

22 1x = 150kB/s In Digital Photography Even in Flash Memory

23 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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26 © 2008 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.


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