[mythtv-users] LVM2 Striping Suggestions...

Andy Speagle sidrew at gmail.com
Sat Sep 23 19:15:10 UTC 2006

I had the same feelings about drive lifespan... and I agree that the data
isn't exactly mission critical... anything that I would want to keep would
be exported on DVD or <insert media here>.  I'd rather sacrifice data
integrity for my media than performance...  It's going to be fun to play
with this setup... as I've done this with old bt878 cards on low-end systems
as a test... but never on real production quality equipment.



On 9/23/06, Michael MacLeod <mikemacleod at gmail.com> wrote:
> If these are new drives, I suspect that the lifetime of the drive is
> longer than the lifetime of his currect mythtv install. Maybe if you've been
> recycling the same drives through systems for the last ten years you can
> expect them to die on you, but seriously, two new drives are going to last a
> while.
> RAID5 for a bunch of television shows is overkill. This isn't mission
> critical data here, and the disks in all likelyhood are going to last at
> least a few years. Maybe I'm just lucky, but I've never had a drive fail
> inside a desktop system (I've had a laptop drive fail when the laptop failed
> to go to sleep when the lid closed and then went for a journey on the
> subway, but those are different circumstances). I've been running four of my
> drives for over five years now, and they still work fine. Although, at four
> years, I did start mirroring the data on another set of drives.
> On 9/23/06, Eric Ladner <eric.ladner at gmail.com> wrote:
> >
> > On 9/23/06, Robin Smith <1canuck2 at gmail.com> wrote:
> > > Yikes! Having been burned by too many dead hard drives in my life, I
> > > would never consider this option... you are essentially double your
> > > chances of complete data loss.
> >
> > I agree completely.  Either buy another drive and do RAID5, or mirror
> > the pair you have.  It might not happen today or tomorrow, but
> > eventually, you'll loose 500GB of data when ONE of your 250GB drives
> > fail.
> >
> > As for throughput, consider that the average show (my average anyway -
> > I turn my settings up for better quality) is about 2.5 Gig.  That
> > works out to about 650K per second.  I'd figure you'd have to have
> > about 8 to 10 streams running at the same time before you'd start to
> > see problems.
> >
> > My 0.02
> > --
> > Eric Ladner
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> >
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