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#21
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What wears out in an HDD?
On 1/15/2016 2:11 AM, Paul wrote:
Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I barely remember that Hitachi? Toshina? made a big hard disk that needs helium inside the drive. I consider such a design to be truly miraculous, as you know how hard it is to keep helium gas in anything. Helium gas is used specifically for lab testing, for the detection and removal of leaks in vacuum systems. It's a bitch to keep it from leaking. The seal should be pretty tight, I hope. -- @~@ Remain silent. Nothing from soldiers and magicians is real! / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (Fedora release 23) Linux 4.3.3-300.fc23.x86_64 ^ ^ 17:18:01 up 13:31 0 users load average: 0.00 0.01 0.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
#22
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What wears out in an HDD?
Mr. Man-wai Chang wrote:
On 1/15/2016 2:11 AM, Paul wrote: Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I barely remember that Hitachi? Toshina? made a big hard disk that needs helium inside the drive. The Hitachi He6 was the first. It took quite a while, from the first paper launch, until regular users could find these for sale. http://www.newegg.com/Product/Produc...9SIA22F3HF7988 The cover on it, is rather plain looking. You would think there would be a big gas spigot on the side, so you can refill it :-) http://images10.newegg.com/productim...9555218053.jpg In this picture, have a look at the head stack. Impressive. Use the zoom, to get a good look. The other detail which is rather interesting - almost zero clearance between the platter and the HDA. And the design doesn't look like it went overboard in trying to keep the gas inside either. Notice how the HDA has all those screw holes, and yet the "lid" in the Newegg picture, shows no screw heads. I almost want to buy one now, and take it apart :-) http://www.amazon.com/HGST-0F20577-U.../dp/B00M1YPVX4 Paul |
#23
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What wears out in an HDD?
On 1/15/2016 8:53 AM, Paul wrote:
Mr. Man-wai Chang wrote: On 1/15/2016 2:11 AM, Paul wrote: Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I barely remember that Hitachi? Toshina? made a big hard disk that needs helium inside the drive. The Hitachi He6 was the first. It took quite a while, from the first paper launch, until regular users could find these for sale. http://www.newegg.com/Product/Produc...9SIA22F3HF7988 The cover on it, is rather plain looking. You would think there would be a big gas spigot on the side, so you can refill it :-) http://images10.newegg.com/productim...9555218053.jpg In this picture, have a look at the head stack. Impressive. Use the zoom, to get a good look. The other detail which is rather interesting - almost zero clearance between the platter and the HDA. And the design doesn't look like it went overboard in trying to keep the gas inside either. Notice how the HDA has all those screw holes, and yet the "lid" in the Newegg picture, shows no screw heads. I almost want to buy one now, and take it apart :-) http://www.amazon.com/HGST-0F20577-U.../dp/B00M1YPVX4 Paul Looks like about 6 or 7 heads! and about 7 screw holes alright and no screws!!!! Something queer going on, Maybe photoshopped? Gotta find more images from somewhere and see whats up Doc. Regards, Rene |
#24
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What wears out in an HDD?
On 1/15/2016 8:53 AM, Paul wrote:
Mr. Man-wai Chang wrote: On 1/15/2016 2:11 AM, Paul wrote: Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I barely remember that Hitachi? Toshina? made a big hard disk that needs helium inside the drive. The Hitachi He6 was the first. It took quite a while, from the first paper launch, until regular users could find these for sale. http://www.newegg.com/Product/Produc...9SIA22F3HF7988 The cover on it, is rather plain looking. You would think there would be a big gas spigot on the side, so you can refill it :-) http://images10.newegg.com/productim...9555218053.jpg In this picture, have a look at the head stack. Impressive. Use the zoom, to get a good look. The other detail which is rather interesting - almost zero clearance between the platter and the HDA. And the design doesn't look like it went overboard in trying to keep the gas inside either. Notice how the HDA has all those screw holes, and yet the "lid" in the Newegg picture, shows no screw heads. I almost want to buy one now, and take it apart :-) http://www.amazon.com/HGST-0F20577-U.../dp/B00M1YPVX4 Paul Found some info here on HE6 helium drive http://www.tomsitpro.com/articles/hg...d,2-921-2.html Regards, Rene |
#25
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What wears out in an HDD?
On Thu, 14 Jan 2016 14:22:27 -0500, Micky
wrote: On Thu, 14 Jan 2016 13:11:40 -0500, Paul wrote: The only drives currently which are completely sealed, are the Hitachi helium drives. (I don't know if anyone else makes a helium drive yet or not. There isn't a lot of helium to be wasted any more. The price is getting quite high.) Where I live, a dollar store sells helium baloons for a dollar. I see people buy 5 at a time. It's terrible and such a waste. You can learn all you need to know from one balloon. What if you want to learn what you can do with five helium balloons at once? There should be a 3000% excise tax on helium. Sincerely, Gene Wirchenko |
#26
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What wears out in an HDD?
On Thu, 14 Jan 2016 13:11:40 -0500, Paul wrote:
Mr. Man-wai Chang wrote: On 1/14/2016 10:24 PM, JJ wrote: No. Not really. Not all of them. It depends on the HDD manufacturing. Some models are durable, and some are not. My 160GB WD only lasted about a year while my 3 years old 40GB Seagate is still fine. I have never had a dead hard disk, except that IBM Deathstar that used glass platters. The other one I lost was a Seagate ST-251 40M (yes, 40M) which was dropped accidentally. FYI, my environment is somewhat harsh. No air conditioning (because it's in an open room), and the air is not clean enough. Outside air shouldn't be able to reach inside the hard disk, but the circuit board might be affected. Outside air *does* reach the platter. There is a hole in the cover, with a hepafilter fastened by adhesive, on the inside surface. http://www.howtogeek.com/127433/what...n-hard-drives/ This is a datasheet for a filter disc for the HDA cover. Just to illustrate they do exist. https://www.donaldson.com/en/diskdri...ary/051290.pdf ******* The only drives currently which are completely sealed, are the Hitachi helium drives. (I don't know if anyone else makes a helium drive yet or not. There isn't a lot of helium to be wasted any more. The price is getting quite high.) Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I consider such a design to be truly miraculous, as you know how hard it is to keep helium gas in anything. Helium gas is used specifically for lab testing, for the detection and removal of leaks in vacuum systems. It's a bitch to keep it from leaking. Paul I used to work for a company that built both the pumps and the eqpt that needed and used UHV (Ultra High Vacuum, 10^9 Tor). They had high-end vacuum seals down pat. They had a number of test and demo units that had been running for long periods of time (years), and it was said one had reached a total vacuum. |
#27
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What wears out in an HDD?
Gene Wirchenko wrote:
On Thu, 14 Jan 2016 14:22:27 -0500, Micky I see people buy 5 at a time. It's terrible and such a waste. You can learn all you need to know from one balloon. What if you want to learn what you can do with five helium balloons at once? There should be a lower tax, if there is a lawn chair tied to the balloons. http://jetpubs.com/wp-content/upload...ot-300x243.jpg That's how we're going to get to Mars. Paul |
#28
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What wears out in an HDD?
Rene Lamontagne wrote:
Found some info here on HE6 helium drive http://www.tomsitpro.com/articles/hg...d,2-921-2.html Regards, Rene So the top is welded on. That'll make it a bit more difficult to get the magnets later. Paul |
#29
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What wears out in an HDD?
On 1/15/2016 12:21 PM, Paul wrote:
Rene Lamontagne wrote: Found some info here on HE6 helium drive http://www.tomsitpro.com/articles/hg...d,2-921-2.html Regards, Rene So the top is welded on. That'll make it a bit more difficult to get the magnets later. Paul Torx driver is a nogo, here come the hacksaw, actually I have enough sets of magnets already and with SSDs I won't be buying any HE6s anyway. Regards Rene |
#30
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What wears out in an HDD?
On 01/14/2016 12:11 PM, Paul wrote:
[nip] Such a drive, wants to keep the helium inside. (No need for a breather hole :-) ) I consider such a design to be truly miraculous, as you know how hard it is to keep helium gas in anything. Helium gas is used specifically for lab testing, for the detection and removal of leaks in vacuum systems. It's a bitch to keep it from leaking. Paul It should be easier than keeping HYDROGEN in. Or antimatter :-) -- "Man creates his gods in his own image; and then spends the rest of his life manipulating them to his heart's content." |
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