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Thread: External HD Question

  1. #1
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    External HD Question

    What will be the best way to power a western digital 320Gb external.

    I have the P1900 now, and it runs the intel mac beautifully, but i get interference with the invertor on through the screen.

    The problem i have is mainly caused because of the fact that i have 28,000 songs and 400 films that i want to have available to me at all times...

    Any help or pointers in the right direction would be really appreciated.

  2. #2
    AMP Creator aychamo's Avatar
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    You must go on *very* long drives!
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    Maximum Bitrate GoHybrid's Avatar
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    or just never sure about what you wanna hear or see!

    I wonder...

    What kind of power does it take? Is it an HDD in an enclosure with a 110V power adapter or is it an internal *external* hard disk that needs straight 12v/5v?

    Could you find a cheap voltage regulator and just tie it in with the ignition so it comes on at the same time as the mac?
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    Quote Originally Posted by aychamo View Post
    You must go on *very* long drives!


    The drive i will be using is...

    THIS HARD DRIVE

    It is alot i know, but with car shows, and alot of business mileage, it is really nice to have.

    Will it connect to the secondary power output of the P1900 in any way, or will there be something else...?

  5. #5
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    That drive says it comes with an AC adaptor cord, so you could plug it into your inverter. Did you mean that you can't do that because your inverter interferes? If so, look at the output of the AC adaptor and see what it is.

    If it's 12 volts, check the amperage. Depending on how much it draws, you may be able to use the secondary output of the P1900 to power it.
    Quote Originally Posted by ghettocruzer View Post
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    CarFrontEnd Creator iamgnat's Avatar
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    Quote Originally Posted by Bugbyte View Post
    If it's 12 volts, check the amperage. Depending on how much it draws, you may be able to use the secondary output of the P1900 to power it.
    I would guess it should work. The 120 is getting down converted at the brick, you are right about the amps though.

    One thing to be concerned with is that the you really don't want the drive to be powered down as that will give you the nasty "drive has been disconnected" warning. While normally that is mostly meaningless, if you are actively using the drive for music/movies then there is a higher risk of data loss (not to mention not being able to pick up where you left off the next time).

    Not sure what the best option is in that regard.

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    The noise of the invertor is unbearable, and is just not an option when you take into consideration the interference.

    I have tried 3 different types now, all above the correct power, but all with the same noise and interference, to the point where i am considering just binning the idea. This said, i really want to just be able to copy the updated itunes music folder across when i need to do it, and external is the only option when it comes to that size of file...!

    I'm thinking now, the only way is to contact technical for the drive manufacturer to see if they can help in any way.

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    Quote Originally Posted by iamgnat View Post
    not to mention not being able to pick up where you left off the next time
    i have found that as long as you exit front row BEFORE you power off or power failure the machine, it will always have resume for what you where doing in front row... Lol

    I had just been switching the mac and hard drive off at the invertor, and had no problems with that or data loss.

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    Quote Originally Posted by iamgnat View Post
    I would guess it should work. The 120 is getting down converted at the brick, you are right about the amps though.

    One thing to be concerned with is that the you really don't want the drive to be powered down as that will give you the nasty "drive has been disconnected" warning. While normally that is mostly meaningless, if you are actively using the drive for music/movies then there is a higher risk of data loss (not to mention not being able to pick up where you left off the next time).

    Not sure what the best option is in that regard.

    -dave
    Good point. I forgot that the P1900 will just yank to power when you shut the car off. It's hard to tell if there will be issues with doing that, but my sense is you ought not to.

    You could get a relay with a timer on it and have it shut the drive down 30 seconds after the car turns off.
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
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    CarFrontEnd Creator iamgnat's Avatar
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    Quote Originally Posted by www.workingcars View Post
    I'm thinking now, the only way is to contact technical for the drive manufacturer to see if they can help in any way.
    Do you already have the drive? If so, all the important information is usually written right on the power brick.

    If not, look into external drives that are powered off firewire or USB2 (look specifically for Mac compatiable ones and you probably won't need to worry about sleep issues, though it may cause more drain on the battery while it is asleep than just the Mini by itself).

    -dave
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