[mythtv-users] question about RAID

[Steve Adeff]

On Monday 09 January 2006 19:25, James C. Dastrup wrote:
> >> mdadm RAID 0 with 3 drives, JFS (my favorite) or XFS file system.
> >>
> >> Some may disagree, but in such a simple setup, I don't see any reason to
> >> add lvm on top of this RAID array, but others may prefer it.
> >>
> >> Also note, I don't believe you can boot off of a md RAID 0 drive, so
> >> you'll need another driver (or network boot) for your boot partition.
> >
> >Ok, thats what I thought. do I have to use any special mdadm settings in
> > order to do RAID0 and have it stripe across the drives?
>
> Nothing special. Just a /etc/raidtab like so:
>
> # /var/video (RAID 0)
> raiddev                 /dev/md0
> raid-level              0
> nr-raid-disks           2
> chunk-size              32
> persistent-superblock   1
> device                  /dev/hda1
> raid-disk               0
> device                  /dev/hdc1
> raid-disk               1
>
> >Is it possible to add another drive to the RAID0 later to increase the
> > speed later? I have the feeling the 2 will be enough for now, but...
>
> I don't know. I think this is where lvm come in handy, but I've never done
> it. But, since your data isn't important, you shouldn't have to worry about
> losing it and creating a new array if something goes wrong

great, thanks for the info. Hopefully the drives get here tomorrow and I'll be 
up and running.

-- 
Steve