Clone disks

[Darin Perusich]

when you say "clone" do you mean mirroring? this can be accomplished
using software raid that's built into the kernel. if you have 2 drives
/dev/sda and /dev/sdb you can create a metadevice, /dev/md* of the
slices/partitions. see the raidtools man pages for more details, man -k
raid shoudl give you all the man pages. software raid is pretty simple
to setup and works well. i have a raid1 (mirror) device setup on 2 SCA
drives(hotswap). to test it i decided to pull one of the drives and it
just kept on kicking. pretty cool.


"[Darth] Snowbeam" wrote:
> 
> Hi all, something I would love to see discussed here are clone disks. I am
> looking for the pros and cons of using clone disks. I actually want a
> better understanding of them. Over the last couple of months, I have found
> I now have some extra disks lying around that could be used as alternate
> boot sources should something happen to my primary disk. Some of my
> queries are:
> 
> - Solaris allows for clone disks and alternate disk boot up. Does Linux?
> - Can clone disks be a form of back up? By this I mean, can a clone of
>   your primary disk and partitions be made on a daily basis?
> 
> Usually I would go out an ddo the research myself, but as it's something
> that just came up, I thought I would pose my questions here as part of
> such research. Thanks for any info anyone can offer.
> 
> ---------
> - [Darth] Snowbeam
> 
> "It is not fear that keeps the elephant wary of the mouse, it is his
> wisdom that reminds him not to underestimate his opponent" -me

-- 
Darin Perusich
Unix Systems Administrator
Cognigen Corp.
darinper at cognigencorp.com