From: Ciro Iriarte (cyruspy_at_gmail.com)
Date: Thu Nov 22 2007 - 14:39:52 CET
Message-ID: <a998a0140711220539y43ceda53g23ab5a883e294837@mail.gmail.com> Date: Thu, 22 Nov 2007 10:39:52 -0300 From: "Ciro Iriarte" <cyruspy@gmail.com> Subject: Re: [suse-sles-e] Re: What is up with >2TB luns?
2007/11/22, Silviu Marin-Caea <silviu_marin-caea@fieldinsights.ro>:
> On Wednesday 21 November 2007 04:18:17 am Alexei_Roudnev wrote:
> > Why do you whant to BOOT from this partition? Create /boot partition,
> > 200MB, and then make any partitions you want on the rest of the disk.
>
> If he has a large volume and wants to define a partition > 2 TB, then the
> partition table has to be GPT. And that is even if the boot partition is 20
> MB.
>
> Alternatively, Ron, you could do this:
>
> 1. Define in your RAID controller a small volume, like 50 MB. This will
> be /boot.
> 2. Define in your RAID controller a volume with the rest of the space. This
> will be / (root partition).
> 3. Boot with SLES in Rescue Mode and use parted to define the large volume as
> GPT and create a partition on it. You have to do this because YaST cannot
> partition GPT, only "msdos" tables. This will be the hacking :-) part.
> Definitely easier that patching and compiling grub.
> 4. Install SLES as usual, and set the 50 MB volume as /boot.
>
> I think this should work and is a minor compromise to obtain the large space
> you want.
>
Well, i think that pretty much solves it's problem. Just in case it
wasn't clear, assuming the Dell Utility is like the HP's Prolian one:
1- Create a big raid (the level you consider best) with the 6 drives
2- Crate two LOGICAL drives on top of it, a 50mb/100mb for /boot, the
rest for a lvm PV
3- Define a GPT on the second logical drive as described above, leave
the first one untouched.
4- Install SLES (you are not telling which version) and use lvm (it
should save you some headaches, although we don't know about your FS
layout)
4.1- Use sda1 (a partition that uses the whole disk) as /boot and
4.2- Add the second disk (sdb) or a partition using the whole space
available (sdb1) to a volume group. (that depends if you use SLES9 o
SLES10)
4.3- Use LVM2 to create different volumes for /, /home, /usr, /var and
your data filesystems. It's really a BAD idea to mix SO and DAT
filesystems, even worse with that disk sizes.
Usually i would order a server with 2x72GB disks and mirror them for
SO and applications use, and use the other 4 slots for a bigger
separate RAID0+1 used for data.... If that's not enough you should go
with external storage.
Regards,
Ciro
PS: I bet your nice 1TB disks are slower that the little 72GB or 146GB
ones running at 10.000rpm, so you already have a performance hit
there....
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