do not cover that hole!

just as it says dont cover it

As far as i know its there to allow airpressure in the harddrive to equalise with the pressure outside.
 
Starwarsman said:
You should really explain what it is you are talking about when you ask a question.
Click to expand...


He is in the Memory and hard drive section... He ask about a hole on something... I think it is pretty self explanatory.
 
Greg J. said:
Hard drive internals are in a vacuum space.
Click to expand...

Well, the read/write heads rely on aerodynamic forces… so the "hole" keeps the pressure within the hard drive constant. I read that even in outer space a lot of components are in pressurized containers… I believe that the properties that allow a read/write head to spin at thousands of RPM's is not possible in a vacuum space...
 
Well, the read/write heads rely on aerodynamic forces… so the "hole" keeps the pressure within the hard drive constant. I read that even in outer space a lot of components are in pressurized containers… I believe that the properties that allow a read/write head to spin at thousands of RPM's is not possible in a vacuum space...
Click to expand...

wouldn't they spin faster in a vacuum
 
Holiday said:
wouldn't they spin faster in a vacuum
Click to expand...

the key words are aerodynamic properties and pressure equalization....

If the disk drive was sealed and in a vacuum what properties would keep the read/write head from spinning out of place and destroying the drive?

Keeping the pressure inside of the drive equal (so if you change altitudes. or the weather changes, the pressure stays the same) allows the read/write heads to move consistently.


Whether or not the read/write head might spin faster on slower in a vacuum is a moot point. I do know that some think light can travel faster in water than in vacuum space... so the idea of vacuum space providing a faster means of transportation might not be correct.
 
You're right. My mistake: http://en.wikipedia.org/wiki/Hard_drives

Quote: "Hard disk drives are not airtight. They have a permeable filter (a breather filter) between the top cover and inside of the drive, to allow the pressure inside and outside the drive to equalize while keeping out dust and dirt. The filter also allows moisture in the air to enter the drive. Very high humidity year-round will cause accelerated wear of the drive's heads (by increasing stiction, or the tendency for the heads to stick to the disk surface, which causes physical damage to the disk and spindle motor). You can see these breather holes on all drives -- they usually have a warning sticker next to them, informing the user not to cover the holes. The air inside the operating drive is constantly moving too, being swept in motion by friction with the spinning disk platters. This air passes through an internal filter to remove any leftover contaminants from manufacture, any particles that may have somehow entered the drive, and any particles generated by head crash."
 
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