[luau] Software RAID (Donation of Oracle 9i Linux)

[Dan George]

Add RAID to 4 drives better. I have 5-20gb hdds and have RAID on the last 4.
You cant add RAID to the hdd you have the OS installed. I have 1,5. Good to
have Parity especially with the electrical systems here in Hawaii where the
average lifespan of a P/S is 1 1/2 years. Too
much flux in the voltage.

----- Original Message -----
From: "Brian Low" <brianl at royalstate.com>
To: <luau at videl.ics.hawaii.edu>
Sent: Thursday, August 15, 2002 3:23 PM
Subject: RE: [luau] Software RAID (Donation of Oracle 9i Linux)


> What would be the point of doing a RAID with 1 drive :)  You get 0
> redundency.
>
> Brian
>
>
> -----Original Message-----
> From: luau-admin at videl.ics.hawaii.edu
> [mailto:luau-admin at videl.ics.hawaii.edu]On Behalf Of Eric Hattemer
> Sent: Thursday, August 15, 2002 2:53 PM
> To: luau at videl.ics.hawaii.edu
> Subject: Re: [luau] Software RAID (Donation of Oracle 9i Linux)
>
>
> In litteral terms, you can do software raid on linux with 1 HD and two
> partitions.  However, it probably hurts performance, rather than
> improving
> it.  The multiple heads on a hard drive all line up vertically and scan
> what's called a cyllinder (multiple sectors stacked on top of each
> other).
> They cannot read two partitions at the same time.  You could test out
> software raid with two partitions, but I don't think you'd be too happy
> with
> it.  You can probably get RAID 1 going with a very slight advantage.  It
> won't save you in case your drive fails entirely, but if you start to
> get
> bad sectors or filesystem errors, at least your HD is backed up on
> another
> partition.
>
> -Eric Hattemer
>
> ----- Original Message -----
> From: "W. Wayne Liauh" <LiauhW001 at Hawaii.rr.com>
> To: <luau at videl.ics.hawaii.edu>
> Sent: Thursday, August 15, 2002 1:54 PM
> Subject: [luau] Software RAID (Donation of Oracle 9i Linux)
>
>
> > <Not really :)>
> >
> > Just thought that with the current advancement of multiple-head HDs,
> things might have changed.
> > But I suppose if someone can develop a new type of BIOS?
> >
> >
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> >
> >
>
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