We have only few rules in this forum:
http://forums.slimdevices.com/showthread.php?t=43454
This thread unfortunately must be closed because it's violating more
than just one of those simple rules.
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mherger
Michael
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westom;566476 Wrote:
A Linux box (properly assembled) should recover harmlessly from
unexpected power loss..
The key word here is should I have hard powered of Vortexboxes 100s
of times with no problems but there are people who have had problems.
Unusually during nasty brown outs or
agillis;566453 Wrote:
I recommend a UPS for any computer equipment. 99 times out of 100 an
unexpected power off is fine but that 1% can cause problems. Usually
data corruption.
I recommend a low cost UPS such as APC. APC is far from the best but
there stuff works well. I have used APC for
JJZolx;566973 Wrote:
Ok, then what facilities does Vortexbox employ to work with a UPS to
ensure a safe shutdown when on battery power? If the UPS battery runs
out, then you're little better off than having no UPS at all. Is it
easy to configure through the Vortexbox software interface?
agillis;566964 Wrote:
The key word here is should I have hard powered of Vortexboxes 100s
of times with no problems but there are people who have had problems.
Which is why those who learned how to think also saw the Challenger
explosion as murder. If you did not, then you are probably
westom;567025 Wrote:
Which is why those who learned how to think also saw the Challenger
explosion as murder. If you did not, then you are probably curing
symptoms rather the solving problems. If not, then you probably so
hated America as to advocate the murder of 4000 American soldiers
pski;567040 Wrote:
Bwa? Anataka kula kuma.
You had to quote the entire spiel to post that? Although I happen to
agree with you.
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JJZolx
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View this
JJZolx;567041 Wrote:
You had to quote the entire spiel to post that? Although I happen to
agree with you. And a majority will agree with the most technically
ignorant. A
majority are not officer or college material. Will blindly believe
what the high school educated retail salesman
7 for 7. Keeping the streak alive...
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JJZolx
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View this thread: http://forums.slimdevices.com/showthread.php?t=80889
westom;567042 Wrote:
And a majority will agree with the most technically ignorant. A
majority are not officer or college material. Will blindly believe
what the high school educated retail salesman orders them to believe.
Also called brainwashing. Cannot ask damning questions. Eyes glaze
pfarrell;566448 Wrote:
... there are different types of UPS designs. The
cheap ones switch quickly, the better ones are called line
interactive and always charge the battery and always run off the
battery (not the mains).
ItÂ’s rather easily to know which UPS is which. To have line
garym;566214 Wrote:
Also, any thoughts on what sort of bad things will happen when my
vortexbox loses power unexpectedly ... And I'm new to linux systems. On
my windows machine, it just goes off, reboots, and I'm back in business. All
computers have done that since Windows NT. Only
westom;566325 Wrote:
All computers have done that since Windows NT. Only machines that could
lose data due to an unexpected power off were Windows 95/ME vintage
machines. Today, power off must never damage saved software. And
unexpected power off - even 50 years ago - must never damage
garym;566328 Wrote:
That's what I assumed (basic UPS). Thanks. I don't worry about this for
my windows machines as it's never been an issue and I'm good at
diagnosing any windows systems issues should any arise (and I have
plenty of data backups off the grid!), but I'm such a newbie at linux
snarlydwarf;566327 Wrote:
For a VortexBox appliance, probably any old cheap UPS will do you fine:
the current draw is not much at all, so you don't need a huge UPS.
Stick with a brandname, but a cheap APC should be fine.
That's what I assumed (basic UPS). Thanks. I don't worry about this
snarlydwarf;566327 Wrote:
Wrong: I've seen machines fail to come back due to power loss.
When a car runs into a telephone pole, you do not get a clean shutdown
at the OS level
When a car hits a pole, all unsaved data is lost. Everything else is
intact.
Wrong in spades are the most naive
westom;566338 Wrote:
When a car hits a pole, all unsaved data is lost. Everything else is
intact.
Wrong: the AC input to your device goes all over the place.
The 12v output of your P/S is NOT regulated to the point that providing
random input to the power supply will always produce 12V.
snarlydwarf;566331 Wrote:
The main thing would be trashing the drive or the power supply
These are problems due to the spikes involved in the typical power
event, not the fact that the system has shut down unexpectedly.
With a machine running Squeezebox Server there should be very little
JJZolx;566358 Wrote:
These are problems due to the spikes involved in the typical power
event, not the fact that the system has shut down unexpectedly.
Yes, and despite the claim of westom, these are very real and even if
there is no activity at the time, WILL damage hardware.
Case in
snarlydwarf;566351 Wrote:
Wrong: the AC input to your device goes all over the place. When someone
posts that nasty, that dumb, that uneducated, and
incessantly, then being polite to an asshole is useless.
Reality taken from so many industry standards from the Computer
Business Equipment
snarlydwarf;566360 Wrote:
Case in point from today:
http://latimesblogs.latimes.com/lanow/2010/08/power-problems-damage-appliances-electronics-in-glendale.html
A severe enough outage that it damaged electrical meters.
A friend knows someone who actually knows this stuff. A 33,000 volt
westom;566361 Wrote:
When someone posts that nasty, that dumb, that uneducated, and
incessantly, then being polite to an asshole is useless.
Exactly. PLONK.
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snarlydwarf
snarlydwarf's Profile:
JJZolx;566358 Wrote:
These are problems due to the spikes involved in the typical power
event, not the fact that the system has shut down unexpectedly.
Thanks JJZolx. Yep, that's what I was asking about. The simple case of
the vortexbox appliance being the equivalent of unplugged without
garym;566442 Wrote:
To be clear, I'm simply trying to avoid any hassles of: the power went
off, and now I have to connect a monitor and keyboard to the appliance
and enter some command lines to restart SbS, mount drives, give out
permissions, and all the other stuff I currently know little
garym;566442 Wrote:
Thanks JJZolx. Yep, that's what I was asking about. The simple case of
the vortexbox appliance being the equivalent of unplugged without
going through a normal shutdown. To be clear, I'm simply trying to
avoid any hassles of: the power went off, and now I have to connect
On 08/03/2010 09:16 PM, snarlydwarf wrote:
Despite claims to the contrary, a decent UPS will protect you from most
events
To expand on this a bit, there are different types of UPS designs. The
cheap ones switch quickly, the better ones are called line
interactive and always charge the battery
I recommend a UPS for any computer equipment. 99 times out of 100 an
unexpected power off is fine but that 1% can cause problems. Usually
data corruption.
I recommend a low cost UPS such as APC. APC is far from the best but
there stuff works well. I have used APC for years.
Basically it doesn't
A real ups constantly delivers ac that has already been passed through
the dc stage.
They switch based-on make-before-break technology and therefore never
truly disconnect the input power.
P
--
pski
real stereo makes the lights dim on the bass notes.
JJZolx;566445 Wrote:
Well, like I said, the only way to really guarantee that the system will
be shut down safely is to have a UPS that communicates with the server
and make sure you have it set to shut down before the battery runs out.
I don't know enough about Linux, and even less about
I think pfarrels and pski's reasing is sound .
The UPS should not run i bypass mode and then switch to battery .
The device protected should run of the generated AC after the DC stage
.
Even if modern UPS should be using static switches (not relays or
contactors) and thus be able to switch
I'm thinking of using a UPS with my new vortexbox appliance as I live in
an area that does have thunderstorms, etc. that can cause 1 minute to 30
minute power outages. Any suggestions as to brand/type?
Also, any thoughts on what sort of bad things will happen when my
vortexbox loses power
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