Robocopy is smart enough to not allow this to happen.

Regards,

Michael B. Smith
Consultant and Exchange MVP
http://TheEssentialExchange.com


-----Original Message-----
From: Ben Scott [mailto:[email protected]] 
Sent: Tuesday, February 01, 2011 11:27 AM
To: NT System Admin Issues
Subject: Re: Copying large file

On Tue, Feb 1, 2011 at 10:49 AM, [email protected] <[email protected]> wrote:
> This is my last XCOPY /SEVCOYHKDR command.
>
> File creation error - Insufficient system resources exist to complete the 
> requested services.
> S: drive is an NTFS Raid 5 with 860 GB of space.  The file is 57GB on 
> S:.  The destination is a 320GB USB drive that has been formatted NTFS.

  I believe the actual error string would be "Insufficient system resources 
exist to complete the requested service" (not singular "service", not plural).  
At least, that's what ERR.EXE tells me.

ERROR_NO_SYSTEM_RESOURCES
0x800705AA = 1450

  Doing a Google for ERROR_NO_SYSTEM_RESOURCES finds a lot of results, 
different people having the same trouble under different circumstances.  But 
the common theme is always that Windows is running out of resources -- 
specifically, certain reserved memory resources used by the kernel to manage 
buffers/caching.  It seems to be common with large I/O operations.

  In your particular situation, my guess is that the RAID array is way faster 
than the USB drive, so the source can read data much faster than the target can 
write it.  Presumably, Windows handles this situation poorly, tries to buffer 
everything, and runs out of fixed resources.

  The suggestion someone made of compressing the file first is a good one.

  If that doesn't work, you might try using the /IPG switch (inter-packet gap) 
to ROBOCOPY.  It lets you specify a time delay between "packets" (which I 
believe really means I/O system calls).  It works for local (non-network) 
copies, too.  By slowing down the rate at which data is written, it might keep 
Windows from exhausting its resources.

-- Ben

~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ 
<http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

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~ Finally, powerful endpoint security that ISN'T a resource hog! ~
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