You will rather reach the max path length than reaching the max adressable 
directories on NTFS.

Imagine the following: drive x:

So path would be x:\a\b\c... Etc.

So would be than 260 / 2 - 1 = 129 levels...

Jozef




On 12.2.2013, at 21:23, Kurt Buff <[email protected]> wrote:

> A directory is just another kind of file.
> 
> What's the max number of directories in any given directory? By that,
> I mean only the top-level directories, not counting the
> subdirectories.
> 
> It would be interesting to test this with a simple batch file to start
> creating subdirs in a directory and see if/when it blows up.
> 
> Kurt
> 
> On Tue, Feb 12, 2013 at 11:52 AM, Chinnery, Paul <[email protected]> wrote:
>> The path isn't too deep:  E:\convert\0000000\0000\0000\0000 and from that 
>> point, other folders are created usually on the order of 000000xxxxxx.   
>> Probably on the order of 2+ million folders right now.  At the end, though, 
>> it will be 4+ million easily.
>> 
>> -----Original Message-----
>> From: Kurt Buff [mailto:[email protected]]
>> Sent: Tuesday, February 12, 2013 1:20 PM
>> To: NT System Admin Issues
>> Subject: Re: file limitation error
>> 
>> Aside from path length, which others have already mentioned, if you have 
>> more than 10k files in a directory things will *really* start to slow down. 
>> Whether this will start to generate the errors you're seeing is unknown to 
>> me, but I wouldn't be surprised.
>> 
>> Just FYI - the Win32 API only supports path lengths of approximately
>> 254 characters (I say approximate because there are some interesting
>> oddities) - this is different than the native Windows API, which allows for 
>> much longer path lengths, something on the order of 32768 characters, IIRC. 
>> For example, copy.exe and xcopy.exe both use the
>> Win32 API, whereas robocopy.exe uses the Native API, and will copy (and 
>> delete) those longer names.
>> 
>> Kurt
>> 
>> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ 
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>> 
>> 
>> 
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