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Posted by w_tom on July 11, 2007, 7:51 pm
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> Unless you are unable to use the grounding in/outs as has been my case
> several times.
When effective protectors are earthed, installation of that earthing
wire has some fundamental requirements. For example, that wire must
be short to achieve low impedance. Wire length (not wire gauge) is a
major factor. Wire must have no sharp bends. Wire separated from all
other wires. Ground wire not inside metallic conduit. No splices.
Now look at a ground wire to that UPS. Maybe 50 feet from breaker
box; longer to earth ground. That is far too long. Wire that must
have no sharp bends instead has tens of numerous sharp bends - some
that are even 180 degree bends. Wire bundled with numerous other
wires meaning surges can be induced on those other wires. Numerous
splices.
How many times must that ground wire violate basic requirements
before we admit the plug-in UPS has no earthing? And still we have
not confirmed that a single point earth ground exists. Single point
earthing being THE most critical component in any protection 'system'.
That UPS manufacturer never discusses this. So we review his
numerical specifications. Where does it list protection for each type
of surge? Why no such claim? It does imply protection from a type of
surge that typically does not cause damage. But the type that finds
earth ground, destructively via an appliance? Not even mentioned.
No wonder its manufacturer does not discuss earthing. No wonder its
manufacture hopes you will assume that plug-in UPS protects from all
types of surges. That manufacturer simply forgot to mention some
absolutely essential facts.
Those whose expertise is board swapping with deny all this. But a
days worth of reading defines protection and features that make
direct strikes irrelevant. In each case, what do industry
professionals, recommendations from Standards organizations,
commercial broadcasting experience, and even Ben Franklin's
demonstration - what is required in every case? Earth ground. Two
posts are in can.internet.highspeed on 22 Jun 2007 and 28 Jun
entitled "Of lottery tickets and lightning" in:
http://tinyurl.com/32v3le
Why are electronics damaged? Lightning seeks earth ground. If not
earthed before entering a building, then lightning may overwhelm
protection inside that appliances. Did they also forget to mention
protection already inside all appliances? But if lightning is
permitted a path to earth via an electronic appliance (a direct
lightning strike), then damage can result.
We don't stop or absorb what 3 miles of sky could not stop. Only
'magic protectors' claim to do that. The UPS is promoted as if it
stops that 3 mile electric path. Meanwhile, real world protectors
shunt (connect, clamp, divert, connect) lightning to earth before the
surge can enter a building. What defines protection? Single point
earth ground.
Lightning damage to electronics is a direct strike. Protection
already inside electronics make those lesser events irrelevant. If
not earthed before entering a building, then electronics damage is
directly traceable to human failure. A protector is only as effective
as its earth ground. No single point earthing means no effective
protection.
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Posted by xpyttl on July 12, 2007, 8:46 am
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> Multiple USB External drives, but that's not cheap
You haven't been looking at the ads lately, have you? Those things are
getting dirt cheap.
The problem is that they are rewritable. When you loose something, and want
to restore it from backup, you are under pressure and prone to make
mistakes. Unless you have a separate I/T department with well established
backup and recovery procedures, rewritable backup media is very risky. If
at all possible, backup to something that is write once. If not, keep at
least one copy of your backup in a place that is hard to get to, like a
safety deposit box in the next town. That way you at least have a chance to
settle down before you get your hands on the backup.
..
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Posted by Leythos on July 12, 2007, 1:48 pm
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>
> > Multiple USB External drives, but that's not cheap
>
> You haven't been looking at the ads lately, have you? Those things are
> getting dirt cheap.
A LTO-2 tape does about 400GB compressed, a 200GB USB External drive,
with Fan built into it for proper cooling, is over $150, so they are not
cheap.
If you want to use a Cheap USB drive then accept loss/corruption and you
won't have a complaint.
> The problem is that they are rewritable. When you loose something, and want
> to restore it from backup, you are under pressure and prone to make
> mistakes.
Only the terminally incompetent mistakes "Restore" tab for the "Backup"
tab.
> Unless you have a separate I/T department with well established
> backup and recovery procedures, rewritable backup media is very risky. If
> at all possible, backup to something that is write once. If not, keep at
> least one copy of your backup in a place that is hard to get to, like a
> safety deposit box in the next town. That way you at least have a chance to
> settle down before you get your hands on the backup.
LOL - and I suppose tapes are unreliable too :)
Write Once media has not gained the capacity that USB drives or Tape
has, so it will not be viable for most people for a LONG time.
While burning to DVD-R or DVD-RW is a good option, it's slow, small, and
can still be broken easily.
If the person is likely to mistakenly overwrite their backup, they are
likely to not have a good backup on any media.
--
Leythos - spam999free@rrohio.com (remove 999 to email me)
Learn more about PCBUTTS1 and his antics and ethic and his perversion
with Porn and Filth. Just take a look at some of the FILTH he's created
and put on his website: http://www.webservertalk.com/message1907860.html
3rd link shows what he's exposed to children (the link I've include does
not directly display his filth). You can find the same information by
googling for 'PCBUTTS1' and 'exposed to kids'.
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Posted by Ari on July 13, 2007, 1:46 pm
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> The problem is that they are rewritable. When you loose something, and want
> to restore it from backup, you are under pressure and prone to make
> mistakes. Unless you have a separate I/T department with well established
> backup and recovery procedures, rewritable backup media is very risky. If
> at all possible, backup to something that is write once. If not, keep at
> least one copy of your backup in a place that is hard to get to, like a
> safety deposit box in the next town.
Or a wireless external drive hidden in a concrete wall accessing the
remote drive from a USB bootable w/key
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Posted by Ari on July 11, 2007, 3:53 pm
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> I need my computer up and running pretty quick and rather than
> thinking about it, I took it Microcenter to do a diagnostic.
>
> Here's the silly question, 'How safe is my data?' ...ok, stop
> laughing.
>
> I have few questions.
>
> If I ever did want to take my pc in to have it serviced, can I just
> pull the hard drive? Can they diagnose a problem without the hard
> drive? (unless it is the harddrive)
>
> I'm thinking of starting an online business (haven't yet).
Don't.
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