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  1. #1
    Silver Lounger
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    Optimum number of files

    I am redesigning the directory structure of part of a very large server. Currently the bottom node of some of the directories contain more than 1500 files. I can break down these large directories into smaller sub-directories, but I am wondering if I should also redesign the upper level directory structure. For clarity, some people would like to create intermediate directories that would contain 150 - 200 subdirectories. Is there a point when the performance of a directory branch starts to degrade based on the number of files that it contains. Doesn't Bill look ahead a couple of levels when you a traversing a tree? Is there an optimum number of subdirectories? Are there guidelines for creating a directory structure? TIA --Sam
    <font face="Comic Sans MS">Sam Barrett, CACI </font face=comic>
    <small>And the things that you have heard... commit these to faithful men who will be able to teach others also. 2 Timothy 2:2</small>

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  3. #2
    Silver Lounger
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    Re: Optimum number of files

    Files per volume:
    FAT16 = 2^16
    FAT32 = 2^32
    NTFS = 2^32-1 (that's four billion files)

    Files per directory:
    FAT16 = 2^16-2 physical directory entries (affected by long filenames)
    FAT32 = 2^16-2 physical directory entries (affected by long filenames)
    NTFS = No limit

    Also these may help.

    Limitations of FAT32 File System (Q184006)
    http://support.microsoft.com/?kbid=184006

    Windows NT File Size and Partition Size Limits (Q93496)
    http://support.microsoft.com/?kbid=93496

  4. #3
    Administrator
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    Re: Optimum number of files

    What is the objective? Performance, logical organization, combination?

    Joe

  5. #4
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    Re: Optimum number of files

    Also, have you checked into Windows Storage Server? Seems like you might need something like it.

    Joe

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