[lug] 5 Jan installfest.

[Hugh Brown]

Create /dev/sda1 and /dev/sda2 and make them the same size.  Set the partition type to fd, then use mdadm to create the mirror.  The performance will be terrible and you wouldn't want to do it for anything other than the experience of using the commands.  You can practice failing a "drive" by changing the partition type of /dev/sda2 to be something else and doing a mkfs.  

So, you can practice using RAID (RAID1 with 2 partitions, RAID5 with three) and the commands while you only have one drive, but you'll need to completely redo the RAID after the new drives arrive.

Hugh

On Thu, Jan 03, 2008 at 10:30:40AM -0700, Adams, Scott (FGWA-CO) wrote:
> My intent is to get more 300g hard drives as money becomes available. I
> have 4 9gig drives but I want the larger size. Would it be better to
> learn on the 9gig drives and then repeat the whole process when I get
> atleast one more 300 or to put the 300 in now and get the redundancy
> when I can add the other drives? In otherwords can I set up the RAID
> with only 1 drive in? 
> 
> -----Original Message-----
> From: lug-bounces at lug.boulder.co.us
> [mailto:lug-bounces at lug.boulder.co.us] On Behalf Of Nick Golder
> Sent: Thursday, January 03, 2008 10:02 AM
> To: Boulder (Colorado) Linux Users Group -- General Mailing List
> Subject: Re: [lug] 5 Jan installfest.
> 
> On 2008-01-03 06:41 -0700, Adams, Scott (FGWA-CO) wrote:
> > I only have one out of the 4 drives for this server is it even
> possible
> > to set up and learn about the RAID without having the other drives
> right
> > now?
> > 
> 
> If you are only looking for a learning exercise, RAIDing partitions on a
> single disk would be a good starting point.
> 
> -- 
> Nick Golder