[linux-audio-user] Re: AMD64 question: update

[Loki Davison]

On 7/7/06, Pieter Palmers <pieterp at joow.be> wrote:
> carmen wrote:
> > On Thu Jul 06, 2006 at 02:00:05PM -0400, Dan Easley wrote:
> >> On 7/6/06, Pieter Palmers <pieterp at joow.be> wrote:
> >>> Paul Winkler wrote:
> >>>> On Thu, Jul 06, 2006 at 01:43:40PM +0200, Pieter Palmers wrote:
> >>>>> Modern harddisks use a lot of write caching on the controller to
> achieve
> >>>>> decent performance. So when power goes down when there is data in the
> >>>>> write cache, it is lost. The file system however 'thinks' that data
> has
> >>>>> been written correctly. This hence results in file system corruption.
> >> Thanks much for this whole thread.  It's added substance to what I
> >> previously thought was just personal paranoia and suspicion.
> >>
> >> I've been under the impression it's cheaper to buy used UPS's and buy
> >> replacement batteries for them.  Has anyone done this to good results?
> >
> > im guessing 2 drives , synched nightly via rsync, or in a RAID
> configuration, is cheaper, and friendlier for the environment than
> huge/heavy UPS batteries. i guess i'd invest in that if the electricity
> infrastructure in my area was particularly bad. or in combination with
> daytime solar replenishing to run completely off-grid.
> >
> The RAID does *not* help against power failures. been there, done that.
>
> rsync will do, but then you have to make sure that the outage does not
> occur when running rsync. Anyway it lowers the chance that you'll have
> problems.
>
> > soudns like overkill as a hedge against drive failure though. drives will
> fail.
>
> UPS'es don't prevent mechanical drive failure, but they do prevent
> 'soft' bad sectors. My belief is that these are the most common.
>
> I wouldn't think a 100€ UPS is more overkill than an extra 160G drive
> (costing about the same) for RAID/rsync mirroring.
>
> I've made up my mind about this: 'this UPS is to stay', but feel free
> not to agree of course ;)
>
> Pieter
>

100 euro! for 160G ouch! my 300 gb 16 mb cache sata2 drive was much
less than that!  I don't really have anything that vitial that loosing
it would really suck... guess if i ever make some decent recordings...

Otherwise it all makes sense ;)