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Old Apr 22, 2008, 05:40 PM   #1
jjahshik32
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The 15" mbp stock hdd have the breathing holes covered up

I know this has been already been talked about in a previous older thread but compared to the 17" mbp hdd placement the 15" is a bit different where the hole on the bottom right (breathing hdd hole) is actually covered up...

I was shocked that the stock hdd the hitachi 5k250 the breathing whole was covered up completely (with the sticker that clearly said do not cover) and I installed my hitachi travelstar 7k200 and this is my 7k200 with the breathing hole unblocked.

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Old Apr 22, 2008, 05:53 PM   #2
bcaslis
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I thought you had the MBP 17" hi-res LED?
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Old Apr 22, 2008, 06:03 PM   #3
jjahshik32
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I thought you had the MBP 17" hi-res LED?
I sold it as it was too big (already have a mac pro) and resolution was too small for me.
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Old Apr 22, 2008, 07:28 PM   #4
lauph
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No. It does not cover the hole.
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Old Apr 22, 2008, 09:23 PM   #5
jjahshik32
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I should have taken the picture before I installed my 7k200 on it.. but the 15" mbp that I had with the stock hdd the hole was completely covered up with that orange part taped right over it. Maybe because of the hole being covered some users are complaining about the heat issue??

On my previous SR mbp I remember the left side palm rest got extremely hot because I didnt know about the hole and covered it up just like how the stock one was (installed over the hole because I installed the orange piece back on top of the hole to mimic how the stock hdd was installed). Now that I know about the hole it runs very very cool on the palm rests.

Its a bit different on the 17" mbp because I notice that the positioning of the hdd is different where the hole is not on the bottom right anymore. But I clearly remember that the hole cannot be covered up on the 17" mbps.
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Old Apr 22, 2008, 10:59 PM   #6
e12a
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The breather holes have nothing to do with heat.

http://searchwincomputing.techtarget...212435,00.html
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Old Apr 22, 2008, 11:30 PM   #7
jjahshik32
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The breather holes have nothing to do with heat.

http://searchwincomputing.techtarget...212435,00.html
So its just dust going inside the hole? Even though the article doesnt mention about heat issues correlating with the holes being blocked, maybe it still has some connection as the platters move generating heat and the hdd needs to blow out (breathe) some of the heat trapped inside.

All I can say is first hand experience that previously I blocked the hole while installing the hdd on my mbp and my left palm rest got really hot and now after leaving it unblocked it is very cool to touch (the hdd doesnt get hot as it did before while doing the same intensive work on each hdd).
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Old Apr 25, 2008, 06:40 PM   #8
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That is the only hole in the hard drive, and the only way for air to get in/out. So it is impossible for it to pull in air and blow out air at the same time. Its just there to equalize pressure and as the article says to provide some sort of air cushion

Heat is due to the hard drive working. The more it works the hotter it gets. Inside, the air expands due to heat, which the hole provides relief. But it is far from an "exhaust" port, as the drive doesnt actively push the air out. Besides that hole the drive is hermetically sealed.
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Old Apr 25, 2008, 07:02 PM   #9
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That is the only hole in the hard drive, and the only way for air to get in/out. So it is impossible for it to pull in air and blow out air at the same time. Its just there to equalize pressure and as the article says to provide some sort of air cushion

Heat is due to the hard drive working. The more it works the hotter it gets. Inside, the air expands due to heat, which the hole provides relief. But it is far from an "exhaust" port, as the drive doesnt actively push the air out. Besides that hole the drive is hermetically sealed.
I would think since the platters are spinning at 7200rpm on my hitachi travelstar that it would generate heat/air inside the hdd before exhausting the heat/air outside of that one and only hole.

Even if it doesnt matter in the heat/air department its not a good idea to cover up that hole as it directly saids "do not cover up this hole" and clearly the orange circuit thick part where its sticky on the bottom was taped right over the hole where I had to pry it out with alot of force to take off... I would suggest mbp owners with stock hdd to reseat the orange circuit stickers to uncover the hole (only applies to the 15" mbp as the 17" the hole is not covered up).
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Old Apr 28, 2008, 06:48 AM   #10
inferre
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hi jjahshik32,
did you note any difference, between original 5400 and your hitachi 7200?
I'd like to replace my fujitsu 5400 with an Hitachi 7k200 200gb.
I work with photos (57-120 MB each file).
Thanks
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Old Apr 28, 2008, 09:31 AM   #11
lauph
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omg... how then can you get it?

the hole is NOT for "breathing" as you defined it. it is for the expanded air in the warmed drive to escape to release the PRESSURE, and to let air in when it cools down, when air contracts.

its purpose has absolutely ZERO, 0, relation to heat removal. It is pressure removal. At the most is 0.25cm^3 of air movement, which is SO INSIGNIFICANT to removing heat.

And if you have given it more attention when you pried your cable on the older drive, you might have noticed the glue is 0.25cm away from the hole. the hole is depressed, and a cable running OVER it does not BLOCK it. to block it it requires a AIR TIGHT seal by glue or by rubber. a ribbon cable running loosely over a hole does not block it, even if the hole is not depressed.
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Old Jun 6, 2009, 01:51 PM   #12
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Move the sticky cable slightly to avoid the breathe hole

Why risk a new hard drive's well being? I think the sticky cable covering the hole may have contributed to my 2 year old drive failing. I was lucky and cloned the drive to an external USB drive.
It's very easy to gently adjust the cable slightly to avoid the pressure release hole - which is what it actually does.
The cable is sticky enough to act like tape - so it may seal the hole.
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Old Jun 6, 2009, 02:08 PM   #13
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the hole is to adjust pressurization into the drive at higher altitudes, quite simple and does nothing else.
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Old Jun 6, 2009, 02:23 PM   #14
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the hole is to adjust pressurization into the drive at higher altitudes, quite simple and does nothing else.
Correctomundo - Thank You!!
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Old Jun 7, 2009, 10:06 AM   #15
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If it has a purpose, even small, why tempt fate?

I still say if you are going to replace the internal HD on a MBP, it is such a small matter to make sure the sticky cable ribbon/connector doesn't cover the pressure hole, why not do it while you're there?
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