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1. We talk about hard drives
being fragile – just how fragile are they? If I drop one,
is it likely that it will now no longer work?
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The platters
are extremely delicate, if you even knock the drive over
on it's side, it probably has gotten damaged and will fail
if not immediately, within a short period.
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Also the
spindle bearing has very little tolerance for shock, it
can seize and render your drive in-operable.
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Last but
not least, the heads can park themselves in the middle of
the platters and will prevent the drive from spinning up,
the heads will also cause scratches because they drag in
direct contact with the platter surface not on a cushion
of air as they're supposed to.
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In any
case, if you suspect any failure, copy your files to another
drive immediately.
2. Does cold bother a hard drive?
Can I freeze one with no ill effects?
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Freezing
the drive will not bother it as long as you let it warm
up for an hour or so.
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In fact,
I have sometimes recovered data from stuck heads by freezing
the drive for 20 minutes and powering it up briefly sometimes
giving a gentle tap to release the heads then powering down
as soon as the heads are un-stuck.
3. If a drive suffers a minor
physical trauma such as being dropped, the data can generally
still be recovered, right?
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Most times,
we can recover the data. It all depends on how long after
the crash we receive the drive. People will usually try
everything the can to get their drive working again then
they take it to the "Local Tech Guy" that knows
just enough to screw it up even more...then we get it.
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The other
factor is spare parts. Manufacturers change revisions almost
every month, the parts from last months drive will no longer
work on your drive. Hunting down the exact parts can be
very challenging and costly. We currently pay $200 to $300
for an 80GB drive that would match our parts needs.
4. If I sent you a drive with
an intact platter but damaged read/write heads or arm, about
how much would it cost me to get the data taken from that drive
and put on a DVD or other medium?
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Several
factors affect our price quote:
(Prices will vary for Windows, Mac, Linux
and of course encrypted drives)
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Bad Sectors
are the easiest to deal with (no parts), usually $200 to
$500.
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Dead heads,
no physical damage to the platters..$500 to $900 plus cost
of parts.
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Dead heads,
damage to the platters...$1500 or more labor fees plus parts.
5. Given the fragility of HDDs, would you recommend
that readers begin to consider SSDs as a replacement for drives?
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SSD's
are not yet reliable, as a standard hard drive might or
might not fail, its a known fact that SSD drives will fail,
the question is when. The technology needs improvement.
6. What about a drive that suffers MAJOR trauma:
fire or flood? How recoverable is its data, generally? (A
side question: In a fire, does anyone know the temperature
at which the integrity of the data begins to erode?)
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We have
done work for Fire departments and Insurance companies.
The electronics can get damaged not a affecting the platters
however if the heat reaches the Curie Temperature in hard
drives about 450 deg F, the magnetic properties of the platters
will be lost. I tested this out in my oven out of curiosity.
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Flood
damage depends on what the drive was submerged in and how
long. Salt water evidently corrodes faster than fresh water.
The hard drive should be kept moist in order to avoid further
corrosion. We have special techniques to clean the platters
and recover the data.
7. Do you have any interesting (human interest, happy/sad,
surprising) stories about cases in which you’ve been
able (or unable, I suppose) to recover data for someone?
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The Students
just before finals is always most gratifying. They're freaking
out when they get that blue screen of death. They call me
in desperation, practically suisidal...They panic at the
loss of their future, the costs for data recovery... and
then...I become God-like and get their stuff back (I usually
give them a price break if they need).
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Another
was a small company that I could not recover the data, I
received a bankruptcy notice a few weeks later, that sucked.
I'm never happy when I loose, fortunately it doesn't happen
too often.
8. What’s the biggest or most important piece of data
you’ve recovered for someone?
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Unfortunately,
I cannot give specifics due to Non-Disclosure agreements,
but its amazing how a successful Public Corporation can
get into such a mess by out-dated equipment and incompetent
Certified Engineers. They had a 12 drive Raid 5 storage
unit. The so-called expert IT company that was maintaining
their equipment totally screwed thing up. They were going
bust. I got the thing, 2 weeks later and $20,000 I saved
the company. You would think they would have redundant systems
also Data Recovery should be left to Professionals that
do this type of work all the time.
9. Given how often you see distraught people desperate
to recover their data, what advice would you give to people
about backing up?
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If you
get lazy and don't back up all the time, be prepared to
fork out the bucks.
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If your
machine seems to be slowing down, expect immanent failure
and back it up then bring it to some tech guy if you must.
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If you
add software or modify your computer, back it up.
10. Anything else come to mind
that you think readers should know about?
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Drives
are cheap nowadays, when you buy one, buy 3. You have many
backups that way, you can build a Raid 5 or Raid 1 machine
easily and you have spare parts if ever anything goes wrong.
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