i have proved this script
MySQLDumper
MySQLHotxcopy
Bigdump
the bigdump is for import not for backup
So i have just one problem when sending email to users i give error just 1000 email going .. then get error
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@xxxxxxxxxxx.net and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.