OpenEuphoria

Re: Windows Tape Backup Functions

• Posted by Bernie Ryan <xotron at bluefrog.com> Aug 15, 2006
• 540 views

Jonas Temple wrote:
> 
> Thanks, Bernie.  I have the MSDN backup functions bookmarked and that's where
> I stared.  I came here to hopefully find someone who's used them!
> 
> What I don't get is how do you determine how many tape marks s/b written to
> the tape?  Logically I thought:
> 
> 1. Write a tape mark
> 2. Write out the file attribute data
> 3. Write out the file data
> 4. Go back to step 1 and repeat as necessary
> 
> But I'm not sure if that's right.  Why would you ever want to write more than
> 1 file mark?  
> 
> I also scanned the internet and could not find any working example programs
> of this function.
> 

Jonas:

  Most information on the web are going to be found on the WEB
  are going to be found by searching for MAGTAPE.

Here is some information about 3590 marks and blocking
http://www.discinterchange.com/mainframe_tape_details_.html

Here is some information about different formats.
http://vista.intersystems.com/csp/docbook/DocBook.UI.Page.cls?KEY=GIOD_magtapeio

  I think that you are going to find that writing a tape backup
  program is going to be a bigger job than you think.

  Don't forget that the tapes that your software writes will have to be
  read by other compatible systems if for some reason your system fails
  and you need to recover your data.

  Maybe you might consider the TAR format which may have open source code
  that you could use as a guide.

Bernie

My files in archive:
WMOTOR, XMOTOR, W32ENGIN, MIXEDLIB, EU_ENGIN, WIN32ERU, WIN32API 

Can be downloaded here:
http://www.rapideuphoria.com/cgi-bin/asearch.exu?dos=on&win=on&lnx=on&gen=on&keywords=bernie+ryan