On Sat, Dec 06, 2014 at 03:22:13PM -0500, Bob Goodwin - Zuni, Virginia, USA wrote:
> I have a computer with two WD 750G disks and Scientific Linux
> release 7.0 (Nitrogen) installed from SL Live. I simply used the
> install option that appeared after booting it. It asked about the
> disks to be used and I selected both and checked the boxes for a
> RAID-1 install assuming that it would format the the drives as
> necessary. Was I wrong?

I confirm that SL6 is easy to install on mirrored (RAID1) disks,
but you have to use the "manual/custom partitioning" mode. Early
releases of SL6 had problems with installing the boot loader,
but SL6.5/6.6 is all good.

I have not tried SL7 yet.

I do not understand why the SL installer does not have an easy to use
button for "I have two identical disks, please mirror (RAID1) them for me!".

But still, the SL installer is better than the Ubuntu installer,
where the option for creating RAID volumes (and thus installing to mirrored disks)
has been removed on purpose (it *is* present in the "server installer").

> I ask because the resulting install is not what I expected.

It is the expected result - computers never do what you expect them to do.
They only do what the programmers have programmed them to do.

-- 
Konstantin Olchanski
Data Acquisition Systems: The Bytes Must Flow!
Email: olchansk-at-triumf-dot-ca
Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C., V6T 2A3, Canada