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From: GreenXenon on 21 Apr 2010 11:41
On Apr 21, 4:47 am, "JosephKK"<quiettechb...(a)yahoo.com> wrote:
> On Thu, 15 Apr 2010 17:48:42 -0700 (PDT), GreenXenon
>
>
>
> <glucege...(a)gmail.com> wrote:
> >On Apr 15, 5:31 pm, whit3rd <whit...(a)gmail.com> wrote:
>
> >> On Apr 15, 2:15 pm, GreenXenon <glucege...(a)gmail.com> wrote:
>
> >> > Can similar data recovery be performed on volatile RAM chips even
> >> > after the power is offed.
>
> >> Similar, no.  Recovery, yes.  The volatility has a time decay constant
> >> of a second or so, and it takes a long, temperature-dependent, delay
> >> after power-off to thermalize the information to nonexistence.
>
> >If the time-decay-constant is a second, then will it take a second for
> >the data to be completely lost when the power is offed?
>
> No.  About 1 second for 63% of the data to become thermalized.  It is an
> exponential tail like a capacitor discharge, which is what is going on.


Is it possible to build the memory chip in such a way that when the
power is offed, it only takes 1/100 second for all the data to be
completely lost even at the quantum level?

Is there any other way to prevent this burn-in issue?
From: GreenXenon on 24 Apr 2010 17:04
On Apr 15, 5:31 pm, whit3rd <whit...(a)gmail.com> wrote:
> On Apr 15, 2:15 pm, GreenXenon <glucege...(a)gmail.com> wrote:
>
> > If I heat the platters of my HDD beyond curie point to eliminate the
> > platters' magnetic properties, will disk-splicing still make it
> > possible to recover data from those platters?
>
> No.  Alas, you haven't any clear idea what the 'curie point' is
> for any given disk, since you don't know the magnetic formula.
> Disk-splicing will lose data at each stress region, since stress
> leading to fracture or bending is also capable of demagnetizing.
>
> > Can similar data recovery be performed on volatile RAM chips even
> > after the power is offed.
>
> Similar, no.  Recovery, yes.  The volatility has a time decay constant
> of a second or so, and it takes a long, temperature-dependent, delay
> after power-off tothermalizethe information to nonexistence.


Let's say that after the power supply is cut-off from the volatile RAM
chip, the RAM chip is heated to the hottest it can get without
suffering any physical damage. Will this speed up the rate at which
data is lost?
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