Suicidal HDD (OT mystery)

From: Max Eskin <>
Date: Fri May 1 18:17:36 1998

Well, the speakers are probably 6". We are playing instrumental
music, nothing too heavy. Both drives were Micropolis, IDE-based,
like most newer Macs. Nothing much bangs on the table, except
the speaker vibrations. Could it be the Yamaha keyboard or
amplifier (just regular black box)
>> >
>> >
>> >
>> > The speakers MIGHT be the problem. There is a pair of them, each
>> > twice the size of an IMSAI, right beneath the macintosh
>> I see... Now, while a lot of older drives locked the pack to the
>> using a fairly powerful magnet (and 3.5" floppy drives still do), I'd
>> still not want to run a hard disk near speakers of that size. Can you
>> rearange the layout of the room a little?
>> -tony
>Guys! I know of several deaf and impaired hearing people who likes
>music at full blast thru regular quality 60W with subwoofer and their
>hard drives cared nothing a whit about vibration level. I think
>something is funny: (Thobbing of music...boom boom bop...)
>1. Did someone disconnect/connect scsi stuff often?
>2. Did something bang the table where Mac sits often?
>3. Specific brands is no better than some and why didn't Max give us
>what kind of both toasted hds was?
>4. Termination issues sometimes cooks the hd especially selection of
>termination power used.
>5. Sharp resonanent sounds sometimes can make the pc chassis
>resosate thus killing hd life early. That does means to some
>machines with plastic chassis and some that will resnsonate, shaking
>the hd long and often. Push and pull on that hard drive bay to see
>how much it can shift or "pluck" it to see if it does vibrate.
>Magnetic field have nearly no effect on hd's inside that steel boxes
>unless Apple used plastic shell with thin tin sheets which that
>requires you to remove either speakers or the pc to different
>location at least 6" to 3 feet away.
>Magnetic field strength falls away at logithmic rate with increaseing
>distrance from the source.
>Jaosn D.

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Received on Fri May 01 1998 - 18:17:36 BST

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