การทำ dhcp snooping
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.1/20ew/configuration/guide/dhcp.html#wp1074087
เมื่อใช้ xcopy แล้ว nsufficient-memory นี่เลยครับ robocopy
Here is an interesting issue I ran into today. I have a script which creates a local copy of one of the important folders on the server using the xcopy command. To make the long story short, after several “accidents” with people messing up or deleting files on the server, we figured that letting people to make local mirrors on their own desktops might be slightly better than restoring stuff back from the tape 4 times a day. It was something along the lines of: rmdir /S /Q "%HOMEPATH%\My Documents\Important" xcopy /E /R /Y /I G:\Important "%HOMEPATH%\My Documents\Important" The script worked fine for almost a year now. Today however it decided to fail. After copying 1 or 2 folders it would simply stop. After closer inspection of the output I noticed that the last line was: Insufficient Memory I immediately checked the memory. The machine had 512 MB of RAM, and over 20 GB of free disk space. The folder I was attempting to copy had only 128 MB. This could not be corre
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