On 01/07/07, Patrick O'Connor <patrick.oconnor at sysadmin.ie> wrote:
> On 01/07/07, Frank Murphy <frankly3d.weblists at gmail.com> wrote:
> > Patrick O'Connor wrote:
> > >
> > >
> > > On 01/07/07, *Frank Murphy* <frankly3d.weblists at gmail.com> > > <mailto:frankly3d.weblists at gmail.com>> wrote:
> > >
> > > Pre-Purchase Q?
> > >
> > > Can I use a Hard Controller in a Soft-Raid box, basically as a
> > > means of
> > > attaching hds'?
> > > (Thinking Sata2)
> > >
> > >
> > > As Niall said any sata/ide/scsi controller will do
> > > I generally use cheapy non-raid pci sata controllers costing around
> > > €30/€40. I don't see any point in using hardware controllers if using
> > > linux raid.
> > Confused here, How would the bios handle non-raid cards, or is it up to
> > the os (CentOS5) to pick them up?
> > Maybe just don't know enough always thought non-raid controllers had
> > to be irq 14\15 & as they are already in use?
The bios will just see multiple hard drives. What I normally do for a
RAID 1 setup is create a boot partition on 1 hard drive with a swap of
the equivalent size on the other. Then I configure linux raid to use
the remaining space on the hard drives to create a root partition.
(This example assumes both hard disks are the same size).
I've never created linux raid volumes for a bootable volume but I
would assume that the bios would just see the boot loader on the disk
you have configured as the boot disk. The fact that it is part of a
linux raid volume should not matter to the bios.
NOTE: This is an assumption, do some googling for confirmation fo this.
>>>>>> If it then dies does a twin need to be installed, or will any do
> > >
> > > Not sure what you mean here??
> > The controller-card Dying.
Depends on the RAID you are using. I mainly use RAID 1 and I have
often removed a drive and mounted it as ext3 (or whatever) and it
reads perfectly.
In relation to recovering a RAID 0 or other type volume after card
failure, again I am assuming, but if you replaced the card with an
identical one (or maybe just similar) the RAID should work as normal.
NOTE AGAIN: Re: RAID 0 - This is an assumption, I haven't had to
recover from RAID 0 so I can't guarantee that this will be the result.
> > >
> > > Frank
> > >
> > > --
> > > http://www.frankly3d.com> > > http://www.posermilitary.com> > >
> >
> >
> > --
> > http://www.frankly3d.com> > http://www.posermilitary.com> >
> >
>
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