Raid one

[Marcelo Magno T. Sales]

Karl,

Em Ter 14 Ago 2007, Karl Larsen escreveu:
>     I did a Goggle search and found Linux Journal, Home, RAID-1,
> Part 1 and 2 by Joe Malmin and Ron Shaker, 2002-08-13 and I have
> read it like a book once. It talks to the raid-1 being a superior
> way to back up your computer. I learned that raid mirrors
> partitions not hard drives. You can use any two hard drives or even
> the same hard drive! I plan to make a raid 1 using the two hard
> drives I have in this computer right now :-)

But note that RAID is not a substitute for backup. It does not let you 
recover an older version of a modified file, nor a file deleted by 
accident. You need backups even if you setup RAID 1.

>
>     One is a 30 GB and this is a 160 GB but f7 is in a partition of
> 12 GB. So I can make a 12 GB partition on the 30 GB HD and make a
> raid 1 system between /dev/hda2 and /dev/hdb5.
>
>     The book says if /proc/mdstat exists, you have raid support in
> your kernel. I do :-)
>
>     The book set up raid 1 on Red Hat 7 and Debian Potato with the
> early kernels 8-)

It seems the tools you've read about are a bit outdated. Research a 
bit about LVM before you setup RAID in your machine.

[]'s
Marcelo