"Luca" <Luca@discussions.microsoft.com> wrote in message
> Which is th difference between a striping volume and a spanning volume?
> talking about 2 hds, from what I have learned,
> - striping: a file is divided into stripes and stripes are written
> the 2 disk.
> if ONE disk is damaged I will loose all files.
Yes. You're talking about RAID 0 here. You can use RAID 3 or RAID 5
striping, which allows one disk to fail without losing data.
> - spanning: a file is written in one disk only
> if ONE disk is damaged I will loose the files on that disk only
No. You'll probably lose all your files. When a volume SPANS two disks, the
volume combines part (or all) of two disks to make one drive, without
actually striping the data as such. While the files will still logically be
on the undamaged disk if the other one fails, the volume will be destroyed
and you won't be able to access the data (at least not without expensive
data recovery tools).
Microsoft clearly document this:
If you wish to use either of these methods to store data, then make sure you
either have a very good backup solution or that you really don't care if all
the data on the striped or spanned disk vanishes.