backupbatchcopywindows
I have the schedule job of backing large files in Windows Server and it takes almost 2 hours to finish.
For now, I only use copy command in the .bat and copy the large files to another folder.
I'm wondering whether there is more efficient way than the copy command to backup the large files(approximately 90GB). For example, write an c++ program to copy the files rather than the copy command.
Many thanks.
The filename portion of the backup is the worst part to create. You need to be able to create a new file everyday without too much hassle. So here's what I use:
If you combine two of these answers (mine and a previous one) you get this gem:
set mydate=%date:~10,4%_%date:~4,2%_%date:~7,2%
xcopy "%ProgramFiles%\ApplicationName\filename.mdb" C:\Backup\%mydate%_filename.mdb /H /K /O /Y
Doing it this way will give you a file for ever day its run, named with the date.
A complete backup script would look like this
@echo off
:: Yes this looks bad, but it works, it sets the file veriable mydate to YYYY_MM_DAY
set mydate=%date:~10,4%_%date:~4,2%_%date:~7,2%
echo Backing up DC1:
:: start a new backup session, the /M switch is for the type of bakcup being performed, type ntbackup /? for more info
start /wait ntbackup backup \\DC1\c$ /j "DC1 Backup" /f "C:\BAK\DC1\DC1_%mydate%.bkf" /M incremental
echo DC1 is Done
echo Backing up EXCH:
start /wait ntbackup backup \\EXCH\c$ /j "EXCH Backup" /f "C:\BAK\EXCH\EXCH_%mydate%.bkf" /M incremental
echo EXCH is Done
echo Backing up FS1:
start /wait ntbackup backup \\FS1\c$ /j "FS1 Backup" /f "C:\BAK\FS1\FS1_%mydate%.bkf" /M incremental
echo FS1 is Done
echo Backup was completed %date% %time%
pause
This is a complete interactive solution. But the real power is in the set mydate line. Being able to slice a string is a forgotten art in DOS;
set mydate=%date:~10,4%_%date:~4,2%_%date:~7,2%
I take the command output of date, then cut it up, and spit out something that can be used as a filename. That way a new file is created everyday, and you can have a "real" backup system.
Just edit the servernames, DC1, FS1, EXCH and put in your own, or just use drive paths.
Best Answer
The copy command you're using is likely already written in C++ or C, or even with lower-level routines, so you won't really see any speed gains by simply using existing copy functions or methods in those languages.