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Date:	Mon, 8 Oct 2001 18:12:32 PDT
From:	Peter Skye <pskye@peterskye.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Backup to hard drive not allowed ?

Content Type: text/plain

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Steven Levine wrote:
>
> you've pretty much convinced me
> that backing up to tape is easier.

I couldn't get that to work either. (Back Again/2000 Server with
Seagate SCSI and ATAPI tape drives.)

> >I'd end up with a couple hundred lines of zip
> >commands for the root and another couple hundred
> >lines of zip commands for the big subdirectory:
>
> Not really:
>
> /* rexx */
> letters = xrange()
> do i = 2, length(letters)
> ch = substr(letters, i, 1)
> 'zip -r "zip' || ch || " \" || ch || '"*'
> end

Of course, but you're still executing Zip.exe several hundred times and
you still have to code the Path Range user support so you can specify
which range of paths goes into which .zip file. It's like Rollin's FTP
server PSIG project from a few years ago -- the ftp code wasn't hard but
the code for administering the user rights database was a pretty big
project.

> I'll leave it as an exercise for the reader
> to bypass illegal filename characters

And which filename characters were you thinking of? Here's a few you
better not bypass . . .

[H:\temp\test]dir
10-08-01 5:45p 3 35 $
10-08-01 5:45p 3 35 &
10-08-01 5:45p 3 35 +

On a system design note, you're better off using each character and
trapping any errors. That way, as file systems change, the software
won't break because of your hard-coded character bypass table.
_____

I want a dedicated backup machine on my network that backs up all
workstations. I want backup software that has been developed, QC'd and
field tested. I don't want to have to worry about whether Zip.exe was
version 2.3 or version 3.0. I don't want to figure out the workarounds
for filesize limitations or valid filename characters. I want archive
file restoration on-demand and I want disaster recovery. I want secure
off-site (VPN or whatever) backup capability so a current backup is
automatically kept off-site. And I don't want to have to personally
develop the software.

- Peter

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