RAID and root
jhouchin at cableone.net
Wed Sep 29 03:16:18 BST 2004
Thanks for the reply.
My apologies for the delay. I got swamped at work and haven't been on the
So this reply is written over a two day period. Part immediately after receiving
and the rest now. :)
Martin Maney wrote:
> On Mon, Sep 27, 2004 at 09:59:48AM -0500, Jimmie Houchin wrote:
>> The install is going fine but I want to use RAID1 on my 4 250gb SATA drives.
>> The installer says that Ubuntu doesn't do RAID on root.
> Inherited from Debian, yes.
Ah, okay. It's been a few years since I used Debian. I've been playing with
Gentoo. In fact my first few installs on this machine Debian wasn't an much of
an option. I preferred a 64bit distribution and even the 32bit Debian wouldn't
install because it do the SATA drives, etc. At that time the testing installers
were still pretty old.
>> What is the smallest root that I can do and symlink to everything else
>> on the RAID partitions. In other words I would like to make the root
>> partition as small as possible but as large as necessary.
>> The reason for this is I want all the drives identical. Since I cant
>> RAID boot or root, I will dd boot and root to the other drives when my
>> install is finalized. That way the system can reboot as necessary off
>> any drive.
>> I have never done this before and all RAID setup is new to me.
>> Any help or wisdom greatly appreciated.
> The best RAID is hardware RAID, of course - all these problems just go
> away if you can see your way to picking up a nice 3ware card, plus the
> entire boot process gets protected against single drive failures.
Yeah, I can see that. This is my first attempt at RAID.
If 3ware was in the budget, I would install it in a heartbeat along with 2 more
drives to complete the 6 drive hot-swap case. But alas, the budget, ho hum. :)
Well I wrote that two days ago. Since then I've hemmed and hawed and revised my
I figured it will save me time and effort, and in the long run be the best
I'm going ahead and adding 2 more WD 250gb 8mb buffer SATA drives and this card.
Then I've decided to go ahead and do RAID 10 striping 2 drives and mirroring the
This will give 500gb for data.
Does that sound like a more better way to go? :)
> There, that's my sketchy brain dump on Linux (mostly Debian) versus
> RAID. Feel free to ask for more details, but be warned that since I've
> fallen in geek lust with 3ware controllers I haven't been setting up a
> lot of software RAID boxes.
Geek lust. mmm. That's a tough one. :)
I understand. I would have done that from the beginning had my budget been enough.
More information about the ubuntu-users