Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

VBS multiple copy processes

Posted on 2013-06-24
8
Medium Priority
?
334 Views
Last Modified: 2013-07-01
Hi, I think the the answer to this is no, due to the sequential nature of the script - but then you guys have done amazing things for me before so...

I have a vbscript that I compile to exe and run as admin - It checks for all the USB drives in a computer, NTFS formats and names them all, and then allows me to choose a folder once, that then copies to each USB in turn. I am copying almost 5GB to each so it takes a while! It all works fine but as perhaps we would expect, each copy process completes before the next one starts.

Using windows explorer, if I manually drag and drop the files I can set several copy processes running at the same time and this seems to be much faster. Can I make this happen in VBS do you know?
0
Comment
Question by:tomdenton
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
8 Comments
 
LVL 46

Expert Comment

by:aikimark
ID: 39276687
you want to use the START command to spawn new processes instead of calling each process, which will cause a wait-for-completion.  Your choice of source for the copy operation would be done by the parent process and then it would START a process for each destination it finds, passing the source and destination as parameters.
0
 

Author Comment

by:tomdenton
ID: 39289981
Sorry for the delay.

Do you mean process.start as i can't find anything on s specific START command? If it is process.start maybe i could call several instances of xcopy to achieve what i want?

Can you give me an example of what you mean by the START command please?

Thanks
0
 
LVL 46

Expert Comment

by:aikimark
ID: 39290184
open a command prompt window and type:
Help Start

Note: as with most commands, you can also get the help text with Start /?
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 

Author Comment

by:tomdenton
ID: 39290382
Ah ok I was working in vbs...

In a command window if I use something like:
  start xcopy.exe C:\1 C:\2 /s /e

then it opens a second command window and works fine

But I can't seem to call this from a script. I tried:
  Set oShell = WScript.CreateObject("WSCript.shell")
  oShell.run "cmd start xcopy.exe C:\1 C:\2 /s /e"

It opens the command window but does not execute the xcopy - I am sure I am missing something!

Also, to then run more that one copy process would i just use:
  Set oShell = WScript.CreateObject("WSCript.shell")
  oShell.run "cmd start xcopy.exe C:\1 C:\2 /s /e"
  oShell.run "cmd start xcopy.exe C:\1 C:\3 /s /e"
  etc...
0
 
LVL 46

Accepted Solution

by:
aikimark earned 2000 total points
ID: 39290915
The oShell.Run method does the same thing as the Start command.  As long as you don't include the wait-for-completion = True parameter, you will be able to spawn several processes.

However, the nice thing about the Start parameter is that it has an AFFINITY parameter that allows you to direct the newly spawned task to a particular CPU.
0
 

Author Closing Comment

by:tomdenton
ID: 39291021
Many thanks, when I have put all the code together I will share it here for others to use.

I appreciate your help
Tom
0
 
LVL 46

Expert Comment

by:aikimark
ID: 39291132
When you are testing, please try and separate these USB devices as much as possible.  I've seen people use a series of daisy-chained USB hubs that get saturated quickly.

Also, you should use USB3.0, if your machine has it.
0
 

Author Comment

by:tomdenton
ID: 39291548
Will do, thanks
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I met Paul Devereux (@pdevereux) today when I responded to his tweet asking “Anybody know how to automate adding files from disk to a folder in #outlook  ?”.  I replied back and told Paul that using automation, in this case scripting, to add files t…
When it comes to writing scripts for a Client/Server computing environment it is essential to consider some way of enabling the authentication functionality within a script. This sort of consideration mainly comes into the picture when we are dealin…
Loops Section Overview
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …

598 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question