[K12OSN] Raid 0

Les Mikesell les at futuresource.com
Mon May 17 15:56:46 UTC 2004

> I am installing on the disk, I could use more specific info, what
> partitions do I need to create and what size? I am new to linux, and this is
> to be an experimental lab. 

If I were doing it myself, I'd put / and /home on separate drives
instead of striping.  Letting the heads seek independently is probably
more of a win than combining the transfer rate.  With that approach
you would want about 100 Megs for /boot, 1 to 2 gigs of swap, and
the rest for / on /dev/hda, and /home taking all of /hdc (assuming
your 2nd drive is primary on the 2nd controller).   If you really
want raid0, first think about the size you want for each final
partition, then create a raid partition with half that size on each
drive, then combine them to get the md device with the right amount
of space.  There is less reason to keep /home as a separate partition
with raid0, but it might still be worthwhile when you upgrade to
a newer release because you can do a fresh install without reformatting
/home if it is a separate partition.  This avoids some possible
problems you might have with upgrading a system in place and is
usually faster if you know how to fix up the password file, etc. to
get the users back.

I always make /boot a separate small partion if the drive has more
than 1024 cylinders to avoid any bios limits when booting, but I'm
not sure if that is absolutely necessary these days.

  Les Mikesell
   les at futuresource.com

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