Re: backup-restore question

2007-04-06 Thread Chris Parker
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Bob McGowan wrote:
> Chris Parker wrote:
> Question being is it possible to restore a backup from a win32 (2003
> server) ntfs filesystem via tape onto a linux machine.  I want to be
> able to test our backups to make sure all is restorable.  If this is
> possible how to do it into an ext3, ext2 or other linux native
> filesystem?
> 
> thanks all for your comments.
> Chris Parker
>>
>>

> Short answer, 95%+ probability, no can do.

> Longer answer, it depends on the backup/archiver tool used.  For
> example, if you perchance have Cygwin installed on your windows system
> and used one of the tools that are common to it and UNIX/Linux (tar and
> cpio come to mind), the answer is an unqualified yes.

> More likely you used a Windows tool, which probably has a proprietary
> archive format, so it can't be read from a Linux box.

> Or, you may have used a tool that's proprietary but that has both
> Windows and Linux versions.  This may work.

> Then, there's the question of whether the backup is an image of the
> filesystem itself or just copies of the files.  If it's an image (a
> 'true' image, such as a 'dd' would make), then you might be able to use
> dd to read the tape into a regular file on the Linux box and then mount
> that using the loop back device feature:

>   dd if=/dev/tape of=/path/to/file bs=10k # or something like this.
>   mount -o loop -t ntfs /path/to/file /path/to/mount/point

> Bob

Actually it is a combination of ntbackup and veritas.  We are in the
process of totally switching to veritas 10g for all backups.  I am not
sure of the format that veritas uses.  I do know that there is a linux
agent (not sure if that comes with it or is an extra).

Veritas will run on a win2k3 server and populate a tape library.  I was
asked if it was possible to test the backups on a linux backup server.
Meaning I was going to set up Etch box and test backups with it if it
was possible.  I will have to check into the veritas format, unless
anyone else knows if this would work.

Thanks again,
Chris
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Re: backup-restore question

2007-04-06 Thread Bob McGowan

Chris Parker wrote:

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Question being is it possible to restore a backup from a win32 (2003
server) ntfs filesystem via tape onto a linux machine.  I want to be
able to test our backups to make sure all is restorable.  If this is
possible how to do it into an ext3, ext2 or other linux native filesystem?

thanks all for your comments.
Chris Parker
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Short answer, 95%+ probability, no can do.

Longer answer, it depends on the backup/archiver tool used.  For 
example, if you perchance have Cygwin installed on your windows system 
and used one of the tools that are common to it and UNIX/Linux (tar and 
cpio come to mind), the answer is an unqualified yes.


More likely you used a Windows tool, which probably has a proprietary 
archive format, so it can't be read from a Linux box.


Or, you may have used a tool that's proprietary but that has both 
Windows and Linux versions.  This may work.


Then, there's the question of whether the backup is an image of the 
filesystem itself or just copies of the files.  If it's an image (a 
'true' image, such as a 'dd' would make), then you might be able to use 
dd to read the tape into a regular file on the Linux box and then mount 
that using the loop back device feature:


  dd if=/dev/tape of=/path/to/file bs=10k # or something like this.
  mount -o loop -t ntfs /path/to/file /path/to/mount/point

Bob


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backup-restore question

2007-04-05 Thread Chris Parker
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Question being is it possible to restore a backup from a win32 (2003
server) ntfs filesystem via tape onto a linux machine.  I want to be
able to test our backups to make sure all is restorable.  If this is
possible how to do it into an ext3, ext2 or other linux native filesystem?

thanks all for your comments.
Chris Parker
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