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Lian

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  1. Schliesse mich an, die Platten werden geparkt. Dazu reicht der Reststrom.

     

    Modern voice-coil actuated hard disk drives are all auto-parking

    (older drives required special utility programs to park the

    heads). On some drives, a weak spring is attached to the head

    assembly that tries to pull the heads to the landing zone. When

    power is applied, the actuator is able to overpower the spring and

    position the heads normally. When power is shut off, the

    electromagnetic force from the voice coil abates, and the spring

    yanks the heads to the landing zone before the platters can spin

    down. Other disks use a different mechanical or electronic scheme

    to achieve the same goal.

     

    Aus: http://groups.google.de/groups?hl=de&lr=&ie=UTF-8&oe=UTF-8&selm=7s2jjp%24jmp%242%40orudios.magnet.at

     

    Der Originalverweis ist leider nicht mehr aktiv (http://www.nucleus.com/~corby/harddisk/park.htm)

     

    Sowie:

     

    But here’s a real kicker: If the power to your PC is suddenly cut off, or if you simply press the power button while the drive is still working, the spindle motor will still rotate due to momentum. The minute power drops out, what was once a power-eating motor becomes a power generator. The tiny bit of juice squeezed out of the fading motor is just enough to safely move the read/write head assembly to the landing zone where the heads can be parked.

     

    Aus: http://www.maximumpc.com/features/feature_2003-11-19a.html

  2. @cal77: Aber bitte fahr Deine Eigenwerbung herunter - sonst müssen wir uns bald über ein Sponsoring hier unterhalten.

     

    Angebote immer Willkommen! :)

     

    Bis dahin gilt: Wir sind kein Marketingmittel.

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