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

Loki Davison loki.davison at gmail.com
Fri Jul 7 07:02:25 EDT 2006


On 7/7/06, Pieter Palmers <pieterp at joow.be> wrote:
> Loki Davison wrote:
>
> > 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...
>
> I have the bad luck of living in an expensive country I guess:
>
> WD Caviar 1600JS : 160 Gb S-ATA II (7200/300-8Mb): 86 euro
> Seagate Barracuda 7200.9 160Gb S-ATA II 8Mb: 88 euro
> Maxtor 6V160E0 : 160Gb (7200/300-8Mb) SATA II: 78 euro
>
> MGE Protection Center 420: 89 euro
> MGE Protection Center 500 USB: 102 euro
>
> The 300Gb disks are around 120 euro here.
>
> Probably the you'll be able to get a UPS for less then too.
>
> Greets,
>
> Pieter
>
> PS: where did you get these prices?
>
>

135.00 AUD Australia Dollars   =  78.9844 EUR Euro
Maxtor 300gb

http://www.msy.com.au/Parts/PARTS.pdf

Good prices there on most stuff. Though probably more handy if you
live in Australia ;)

Loki


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