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. It will drop to 0 and back to 12 over and over as the 120VAC comes and goes. That is VERY bad for mechanical devices like hard drives. > > Wrong in spades are the most naive who *know* only using observation. > Also called junk science reasoning. A naive observer will be quick to > blame power loss when his own technical ignorance was a most common > reason for failure. Back this up with proof. Your "experience" is meaningless. > > When does a disk drive learn that computer power is going off? When > the 5 and 12 volts suddenly starts dropping. Again, those who do not > first learn the science - who know only from observation - would not > know that. A disk drive is never warned that power is being removed. > All power offs ( shutdown, yank the power cord, car hitting a pole, > entire state blackout) appear as the same power off to all disk drives. > A reality that was true even when heads were moved by motor oil. Those > educated only from hearsay - who only know from observation - would > never know that. Those educated by observation immediately know > unexpected power off causes damage. Amazing how observation alone > becomes knowledge. All power offs are same to every disk drive - > despite obervations that *know* otherwise. > Wrong. They do NOT appear the same as a power off unless you include "power off includes the state where the power may come on and off dozens of times in a second, and provide both under and over voltage conditions"). Drives see that when a car hits a pole, when a tree limb falls across a power line, when too many a/c's turning on at once cause brownouts, etc etc. > > Linux is just as robust as Windows as are all other computers > today. Linux has the same Windows features that make all power offs > irrelevant. You're wrong. MILLIONS of hard drives beg to differ with your assertions. Hardware damage occurs with voltage over/under conditions. I have no clue what the hell you're talking about operating systems for. Applying the wrong or inconsistent voltage to a drive will damage it, regardless of OS: and power outages are typically not "clean" -- you get tons of spikes and drops both as the power drops out and when it comes back on. Hint: the "regulated 12v" from your power supply is not all that regulated. It is based on certain presumptions of the quality of the input power. That quality goes to hell when the power drops. -- snarlydwarf ------------------------------------------------------------------------ snarlydwarf's Profile: http://forums.slimdevices.com/member.php?userid=1179 View this thread: http://forums.slimdevices.com/showthread.php?t=80889
_______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
