how to setup linux software raid 10

[Joe Rowe]

Like myself,
More and more people are using Edubuntu or Ubuntu
servers or critical workstations with inadequate plans for Disk failure.


Anyone,
Please reply if you have done software RAID on Ubuntu/Edubuntu
and you are good at documenting steps by step tips.


What we have:  A lot of vague advice, steps missing, with nothing 
certain, no step by step.


My wish list:
Step by step instructions, with a FAQ, some screen snapshots etc.
Things like, now you have completed this so you should see this...


or
An Ed/Ubuntu CD boot wizard , that says, I found two similar blank IDE drives,
.....Do you want raid?  yes, next, next, next. done
....Then at CD boot there is a menu, memtest,  maintain rebuild RAID etc...



I've got 6 books from powells.com on Linux admin
I've hunted the internet.  all to no luck.


Here are the best bookmarks I can find on software RAID setup
================================================

These are the best steps I've found,  still a bit generic and I stumble.
http://tinyurl.com/24f9wo

Not specific enough for me to risk the time to try and fail.
https://wiki.ubuntu.com/Raid?highlight=%28raid%29

Steps are a bit too generic and vague.
http://www.crn.com/white-box/171200478

Some steps are very generic, assume the reader is an expert
http://www.howtoforge.com/linux_software_raid



other links to maintain and recover drives..
============================================

Without RAID  I have tested and use these steps
This works great.  I've booted from my backup drive as a test.
http://tinyurl.com/2bfzzm

A very well written primer on Raid and Ubuntu Server
http://www.prism.gatech.edu/~mflaschen3/UbuntuBook/ch05_Ubuntu_Book.html

I may give up trying to learn Software Raid on Linux and just pay for HW Raid..
http://www.cooldrives.com/firewire-raid-sata-raid-system.html

I have some student lab comptuers that can't boot from USB, so I'm gonna try...
http://www.ultimatebootcd.com/

I may also setup my IDE clone to be done via automatic scheduler
http://www.wilderssecurity.com/showthread.php?t=143543

How to recover some of a drive that is dying
http://blogs.sun.com/superpat/entry/hard_drive_recovery_ubuntu_style

Save a dead windows hard drive using your tools: Ubuntu boot cd and a mac
http://tinyurl.com/ytku7v

An example of most linux advice, vague, few steps, expects user to be expert
Don't clone with these steps.
http://www.desinc.net/clone_hard_drive_free

Raid 5 using a Hard Drive Controller card, Hardware Raid
http://www.smallnetbuilder.com/content/view/27840/77/

These steps look complete, but this is to mirror to a different server
http://www.howtoforge.com/mirroring_with_rsync




>>>Date: Sat, 25 Aug 2007 12:45:07 +1200
From: "Krsnendu dasa" <krsnendu108 at gmail.com>
Subject: how to setup linux software raid 10
To: "Edubuntu Users Group" <edubuntu-users at lists.ubuntu.com>

Ok we are just about to get our new system and we want to use RAID 10 with 4
SATAII  320GB drives.
Can anyone give us a step by step how to set up Edubuntu to run on this
setup.
>From the Linux Software RAID HOWTO it seems the simplest  and most flexible
way to set it up is to put LVM on top of the RAID array.
Questions that come to mind are:
How do I set it up so it boots? Which drives should be paired together? (Is
each SATA drive on its own channel? If so, I guess it doesn't matter which
ones get paired.) Do I have to do anything special for swap?
Our system will be quite standard, although perhaps we will be running more
multimedia (MP3s, Flash, Shockwave, Youtube) than most would.
Any help is appreciated.

Thanks.
Krsnendu dasa
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