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Data Recovered From Space Shuttle Columbia HDD

WmHBlair writes "Data recovered from a 400MB Seagate hard drive carried on the Space Shuttle Columbia has been used to complete a physics experiment performed on the mission in space. The Johnson Space Center sent the recovered drive to Kroll Ontrack in Minneapolis, Minnesota. Considering the shape the drive was in (see picture in the linked article), it could indeed qualify for the 'most amazing disk data recovery ever.'" Update: 05/08 12:51 GMT by T : Reader lucas123 points out a piece at Computerworld with a series of photos of the recovered drive.

78 of 274 comments (clear)

  1. Yup... by Raineer · · Score: 4, Insightful

    Data recovery has come a long way, keep this in mind when not using proper deletion techniques! Would have been nice to see a picture of the HDD though, to get a full understanding of the recovery.

    1. Re:Yup... by VMaN · · Score: 5, Informative

      Here is a picture for you:

      http://www.sciam.com/article.cfm?id=hard-drive-recovered-from-columbia&sc=rss

      I'm pretty sure it's the one from the shuttle..

    2. Re:Yup... by Wrath0fb0b · · Score: 5, Informative
      There are a number of standards for secure deletion of magnetic media, but basically writing over it a few times with a random pattern should be sufficient. A lot of people claim that the Gutmann method is superior but that was based on an older encoding scheme that presupposed you knew about the physical layout of the data -- modern drives are permitted to shuffle your data however they want (e.g. sectors can be mapped arbitrarily to the physical platters). Gutmann himself no longer recommend his eponymous method:

      In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques. As a result, they advocate applying the voodoo to PRML and EPRML drives even though it will have no more effect than a simple scrubbing with random data. In fact performing the full 35-pass overwrite is pointless for any drive since it targets a blend of scenarios involving all types of (normally-used) encoding technology, which covers everything back to 30+-year-old MFM methods (if you don't understand that statement, re-read the paper). If you're using a drive which uses encoding technology X, you only need to perform the passes specific to X, and you never need to perform all 35 passes. For any modern PRML/EPRML drive, a few passes of random scrubbing is the best you can do. As the paper says, "A good scrubbing with random data will do about as well as can be expected". This was true in 1996, and is still true now. Source: http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html, emphasis added.

      A good general explanation is given by the RCMP (what the hell mounties have to do with computers, like most of Canadian society, is entirely beyond me) http://www.rcmp-grc.gc.ca/tsb/pubs/it_sec/g2-003_e.pdf

      If you have the practical need to nuke a drive, used DBAN: http://dban.sourceforge.net/
    3. Re:Yup... by jlindy · · Score: 4, Funny

      What are proper deletion techniques? 7 pass DoD... 35 pass Gutmann for the truly paranoid.
    4. Re:Yup... by Raineer · · Score: 5, Informative

      Here is a picture for you: http://www.sciam.com/article.cfm?id=hard-drive-recovered-from-columbia&sc=rss I'm pretty sure it's the one from the shuttle.. Thanks! And from that image it does not appear anything happened to the platters.
    5. Re:Yup... by dAzED1 · · Score: 5, Funny

      nothing happened to the platters...with the exception of the violent crash (head-to-platter damage) and, more importantly, the extreme heat.

      Short of that though, yeah - platters were just peachy.

    6. Re:Yup... by blueg3 · · Score: 3, Insightful

      This is not actually true. Any ability to read data once the entire disk has been overwritten with random data a single time is purely theoretical -- no forensics or law enforcement group can succeed in practice.

    7. Re:Yup... by bsDaemon · · Score: 3, Informative

      http://www.blocksandfiles.co.uk/contentimages/small/Challenger_drive.jpg

      that photo is clearly linked to the article above -- which also doesn't even seem to actually be slashdotted... totally a fritter.

    8. Re:Yup... by onescomplement · · Score: 5, Informative
      I've used OnTrack numerous times and they really know their stuff. I know there are other recovery services out there but these folks have earned my business.

      Basically, you pay a bench fee to get the drive examined, and then they send you the costs for recovery - for a desktop HD $500-$1500 depending on the problem. The cool part is that they send you a manifest of the recoverable files/directories so you can make an informed decision.

      And they _can_ perform miracles. Including dealing with bent platters. Just depends on what you want to pay.

      I must say it's been a great instructional tool for people who've neglected backups. They become wild operational militants after these episodes.

      Just remember that the ONLY way to ensure data cannot be recovered on a HD is to raise the drive temp past the Curie Point for the magnetics. (A charcoal BBQ works really well for this. Just pull the electronics and wrap the drive in heavy foil unless you like the smell of roasted phenolic.)

      Even if you "format" a drive it means that the waveforms coming off the heads can be interpreted as a certain, predictable value - but also remember that at root, it's an analog system and so artifacts from the prior contents are around, it's just a question of finding and interpreting them... That's why the DoD and other "erase" things are so comprehensive. Trying to obliterate all artifacts.

    9. Re:Yup... by Daimanta · · Score: 2, Insightful

      [citation please]

      --
      Knowledge is power. Knowledge shared is power lost.
    10. Re:Yup... by bigredradio · · Score: 4, Informative

      You must be new here.

    11. Re:Yup... by Anonymous Coward · · Score: 5, Funny

      I saw them do it on CSI, and TV never lies.

    12. Re:Yup... by rthille · · Score: 5, Interesting


      I've got a friend/co-worker/gun-nut who never returns a drive with his data on it. Work gets laptops back, sans drives. He takes them out to the range with a high-powered rifle and puts rounds thru them.

      Me, I just use OS-X's write-random 7-times. But if blocks got remapped because of io-errors in the drive, that might be enough for the truely paranoid. If I were that, I'd use my oxy-acetylene torch and just melt the platters to slag, after pulling the magnets out to play with.

      --
      Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
    13. Re:Yup... by RealGrouchy · · Score: 2, Funny

      And from that image it does not appear anything happened to the platters. Well, other than smoke getting in their eyes...

      - RG>
      --
      Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
    14. Re:Yup... by avandesande · · Score: 5, Insightful

      I think the burden of proof lays on the outrageous claim, not the reasonable assertion.

      --
      love is just extroverted narcissism
    15. Re:Yup... by Swampash · · Score: 5, Funny

      Here is a picture for you:

      http://www.sciam.com/article.cfm?id=hard-drive-recovered-from-columbia&sc=rss


      No, I'm pretty sure that's just stock photography of an IBM Deskstar after one week of use.

    16. Re:Yup... by freeweed · · Score: 2, Informative

      (what the hell mounties have to do with computers, like most of Canadian society, is entirely beyond me)

      Uh, the RCMP is Canada's version of the FBI. Large-scale criminal investigations tend to involve computers these days.

      Unless you meant that Canadians don't need computers in general...

      --
      Endless arguments over trivial contradictions in books written by ignorant savages to explain thunder in the dark.
    17. Re:Yup... by citylivin · · Score: 2, Interesting

      "My home computer has full disk encryption"
      Hopefully its not a windows machine, as I read last week that microsoft provides a FOB that decrypts automagically, windows partitions for law enforcement purposes.

      --
      As a potential lottery winner, I totally support tax cuts for the wealthy
    18. Re:Yup... by Khyber · · Score: 3, Informative

      The picture *IS* the 400MB seagate drive. I can tell by the traces and the dimensions of the drive (which there is a ruler at the bottom of the image - it's not a 3.5" factor drive, it's 5.25")

      --
      Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
    19. Re:Yup... by leenks · · Score: 2, Funny

      7 pass DoD... 35 pass Whitehouse... ;-)

    20. Re:Yup... by plover · · Score: 2

      Just record over the same spot for 18 minutes. It worked for Nixon!

      --
      John
    21. Re:Yup... by ColdWetDog · · Score: 5, Funny

      The picture *IS* the 400MB seagate drive. I can tell by the traces and the dimensions of the drive (which there is a ruler at the bottom of the image - it's not a 3.5" factor drive, it's 5.25")

      You can tell the make and model of a nearly completely trashed hard drive.

      I'm not sure whether I should be impressed or if I should merely feel sad for another wasted life ...

      --
      Faster! Faster! Faster would be better!
    22. Re:Yup... by Chris+Shannon · · Score: 2, Funny

      A good general explanation is given by the RCMP (what the hell mounties have to do with computers, like most of Canadian society, is entirely beyond me) Mounties are our computer people who specialize in hard drives, hence their name.
      Makes sense, doesn't it?
      --
      "Follow me" the wise man said, but he walked behind.
  2. I've had some drives crash on me, but.. by catdevnull · · Score: 4, Funny

    I will probably never use the term "crash" to describe a hard drive failure again.

    I'll bet Ontrack made a fortune off of this recovery, too.

    --

    I might know what I'm talkin' about, but then again, this is Slashdot...
    1. Re:I've had some drives crash on me, but.. by theodicey · · Score: 5, Insightful

      Actually, they probably did it for next to nothing, anticipating all the free press coverage they would get. This very "press hit" on slashdot is a good example of what they were aiming at. (Although in this specific case, they deserve the good press they're getting.)

    2. Re:I've had some drives crash on me, but.. by joeytmann · · Score: 5, Interesting

      Ontrack has been doing this type of recovery for years. A couple of times I have asked for quotes, just to even look at the drive was like $1,000US. Can't remember how much it was per MB to retrieve the data. I know they have recovered data for machines lost in hurricane andrew, servers sitting in water for months. They were in Kuwait after the 91 gulf war recovering systems there. I think the only way to not have Ontrack recover a drive is to literally melt the platters.

      --
      Insert funny smart-ass comment here.
    3. Re:I've had some drives crash on me, but.. by bkr1_2k · · Score: 5, Insightful

      "Actually, they probably did it for next to nothing, anticipating all the free press coverage they would get. "

      Don't count on it. First off, they probably didn't even know if they could recover the data. Second, they would have no way of knowing for sure that NASA would release the information about them providing the data recovery services. Third, they very likely wouldn't have known whether or not the data (if recovered) would be used for anything in the future. Fourth, there are very strict rules about government agencies doing business where they don't pay for services, especially with potentially classified data on the drives.

      I would bet very strongly that they got well paid for this recovery.

      --
      "Growing old is inevitable; growing up is optional."
    4. Re:I've had some drives crash on me, but.. by JoshRosenbaum · · Score: 2, Interesting

      I think the only way to not have Ontrack recover a drive is to literally melt the platters. I think this is false. I sent a hard drive to them and they sent it back (and made me $100 poorer) and told me they couldn't recover anything.

      The story of the drive: I had my computer (tower) at a party in college and one of the sides was off. I also had one of my storage (not boot) hard drives (which contained various art, pictures, and other valuable stuff to me) laying on the bottom of the 'puter. A buddy came flying out of a door, hit my hand which contained my beer and the beer went flying into the case and all over my hard drive. Needless to say I was pretty well "gone" at that point and toweled the inside/drive off, but left it running. At that point my computer was the party machine pumping loud music and it couldn't be stopped. :P Anyhow, let's skip to the next morning where I go and power down the computer and check out the drive. Well the chips on the controller card were fried. (Physically melted.) :(

      So the moral of the story is that if you want to make your data unrecoverable, have a party. Space shuttle explosions will not do the trick. Oh, and backups are good. :) And probably about 20 other morals too. :P

      Needless to say, I sort of hope that one day I will find a company that can recover the data, because if they can recover a hard drive from a space shuttle explosion, you'd think a little beer would be nothing. :P
  3. Good thing, too! by greyspectre · · Score: 5, Funny

    Their server is shooting flames as I type this, but they have the technology to recover their site!

  4. Re:Fastest /. effect ever ! by Tackhead · · Score: 2, Insightful

    Seriously. We are talking less than a min here.

    At least the pic of the server is still intermittently retrievable!

  5. Re:Fastest /. effect ever ! by gatzke · · Score: 2, Informative
    Opened it in about 30 tabs and a few loaded...

    Most amazing disk data recovery ever

    It was one of the most iconic and heart-stopping movie images of 2003: the Columbia Space Shuttle ignited, burning and crashing to earth in fragments.

    Now, amazingly, data from a hard drive recovered from the fragments has been used to complete a physics experiment - CXV-2 - that took place on the doomed Shuttle mission.

    Columbia's fragments were painstakingly and exhaustively collected. Amongst them was a 400MB Seagate hard drive which was in the sort of shape you think it would be in after being in an explosive fire and then hurled to earth from several miles up with a ferocious impact.

    The Johnson Space Centre workers analysing the shuttle crash sent it off the CVX-2 (Critical Viscosity of Xenon) experiment engineers, who sent it on to Kroll Ontrack in Minneapolis, Minnesota, to see if the data, any data, could be recovered. For researcher Robert Berg and his team it was the only hope, a terribly slim hope, of salvaging significant data from the experiment looking at Xenon gas flows in microgravity.

    The Kroll people managed to recover 90 percent or so of the 400MB of data from the drive with its cracked and burned casing. Now, a few years on, Berg and his team have analysed the data and reported the experiment and its results in the April edition of the Physical Review E journal. These showed that, rather liked whipped cream which changes from a fluid to a near-solid after being whipped or stirred vigorously, the gas Xenon change its viscosity from gas to liquid when similarly treated in very low gravity. The phenomenon of a sudden change in viscosity is called shear thinning.

    It was a highly complex experiment needing prologed and detailed analysis of the data on the hard drive to discover the shear thinning effect. But it, like the drive, was eventually found. So ends a twenty-year research project and in doing so helps bring to a finish the dreadful story of the Columbia Space Shuttle mission.
  6. Amazing data recovery! by InvisblePinkUnicorn · · Score: 5, Funny

    Wow! They recovered 400MB of data when all they had to work with was "500 Internal Server Error"?! Unbelievable!!!

  7. Preparing for slashdot effect by NeutronCowboy · · Score: 5, Funny

    So someone put together a story on spectacular hard disk failure, space shuttle, physic experiments and heroic success, and decided to host this on anything less than an industrial-strength web server? The only thing that could have made for a quicker or larger slashdotting would be if somehow it also involved big guns and Natalie Portman (with hot grits, petrified).

    Seriously people. Show some foresight here. At least the editors should have shown some mercy.

    Soooo.... anyone got a coral cache of it?

    --
    Those who can, do. Those who can't, sue.
  8. Re:Mounting Brackets by eln · · Score: 5, Insightful

    I think when you're intending to launch something into space using a couple of giant rockets, you might be concerned about vibration shaking normal bolts loose.

    As for the condition of the drive, it's hard to say. The exterior was obviously fried, but it was still basically drive-shaped, and from the picture it's impossible to say how damaged the platters were. If the outside was messed up but the platters were still intact, I would think recovery would be fairly simple. Would have been nice to include a picture of the interior of the drive, or maybe even multiple pictures as they took it apart.

  9. another link by Bazards · · Score: 5, Informative
  10. Re:Fastest /. effect ever ! by Anonymous Coward · · Score: 3, Funny

    Great, so it was you that finished off the server. gatzke effect. Not really got the same ring to it.

  11. workaround to get into this website to view it by PhreakOfTime · · Score: 4, Informative

    Almost looks like the site is denying visits when the referer is slashdot.org. With the below method, I was able to read the full article with no problems.

    To get in, simply copy the link in the story into a new browser window and hit enter to come into the site with no referers.

    Hope this helps

  12. Re:Fastest /. effect ever ! by TubeSteak · · Score: 3, Informative

    http://i29.tinypic.com/6h2vll.jpg

    Data recovered from Seagate drive in Columbia shuttle disaster

    posted on 06 May 2008 20:05
    Most amazing disk data recovery ever

    It was one of the most iconic and heart-stopping movie images of 2003: the Columbia Space Shuttle ignited, burning and crashing to earth in fragments.

    Now, amazingly, data from a hard drive recovered from the fragments has been used to complete a physics experiment - CXV-2 - that took place on the doomed Shuttle mission.

    Columbia's fragments were painstakingly and exhaustively collected. Amongst them was a 400MB Seagate hard drive which was in the sort of shape you think it would be in after being in an explosive fire and then hurled to earth from several miles up with a ferocious impact.

    The Johnson Space Centre workers analysing the shuttle crash sent it off the CVX-2 (Critical Viscosity of Xenon) experiment engineers, who sent it on to Kroll Ontrack in Minneapolis, Minnesota, to see if the data, any data, could be recovered. For researcher Robert Berg and his team it was the only hope, a terribly slim hope, of salvaging significant data from the experiment looking at Xenon gas flows in microgravity.

    The Kroll people managed to recover 90 percent or so of the 400MB of data from the drive with its cracked and burned casing. Now, a few years on, Berg and his team have analysed the data and reported the experiment and its results in the April edition of the Physical Review E journal. These showed that, rather liked whipped cream which changes from a fluid to a near-solid after being whipped or stirred vigorously, the gas Xenon change its viscosity from gas to liquid when similarly treated in very low gravity. The phenomenon of a sudden change in viscosity is called shear thinning.

    It was a highly complex experiment needing prologed and detailed analysis of the data on the hard drive to discover the shear thinning effect. But it, like the drive, was eventually found. So ends a twenty-year research project and in doing so helps bring to a finish the dreadful story of the Columbia Space Shuttle mission.

    [Chris Mellor, editor.]

    --
    [Fuck Beta]
    o0t!
  13. Way to go guys (and gals) by smooth+wombat · · Score: 4, Funny

    Now look what you've done. Wasn't it bad enough the shuttle burned up? Now you've gone and burned up the server trying to show us pictures of the mangled hard drive from the burned up shuttle.

    --
    We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
  14. Damn, that is one tough drive! by Rearden82 · · Score: 3, Interesting

    I'm amazed that it's still in one piece and recognizable.

    I've always been skeptical when a hard drive's specs mention being able to handle 300 g's. Looks like they aren't kidding.

  15. only 400mb? by name*censored* · · Score: 3, Insightful

    Am I the only one who thinks that it's a little odd that they used a moving parts hard disk drive for such a paltry amount of data? (If it was solid state then it'd be a power of 2, not a round number). Surely even 2003stonauts could have managed to put together more than 400MBs in solid state, thus saving power, size and reliability?

    --
    Commodore64_love: I don't comprehend people who're so frightened of death that they'll bankrupt themselves to stay alive
    1. Re:only 400mb? by thermian · · Score: 2, Insightful

      The experiment, and all the hardware, would have had to be tested and verified as viable for use in the experiment. That would have taken at least a year, if not longer.

      I would say it was likely the experiments exact hardware requirements were set in stone a year or two before launch. Flash drives are plentiful and reliable now, but may not have been deemed reliable enough at the time.

      When it comes to space, tried and tested older equipment is better. Just ask the Russians.

      --
      A learning experience is one of those things that say, 'You know that thing you just did? Don't do that.' - D. Adams
    2. Re:only 400mb? by Gat0r30y · · Score: 2, Informative

      For precisely the reliability issue you bring up - most anything on the shuttle has to go through > 8 years of reliability testing - before it can go up. sooo... 2003-8 = 1995. They probably could have gone with something better than 400MB's - but in 1995 did you have 1/2 gig flash storage devices? Hell in 1995 did you have 1/2 a gig of anything?

      --
      Prediction: The real iPhone killer is going to be sex robots from Japan. Think about it.
    3. Re:only 400mb? by dAzED1 · · Score: 2, Insightful

      it takes years before tech is put into the shuttle. The collection of tech was at one point very advanced, but the components themselves are tested for years.

    4. Re:only 400mb? by chile_addict · · Score: 2, Informative

      The experiment relied on telemetry for most of the data. The hard drive capacity was sized to hold only the data between transmissions. According to the journal article written by the scientists: A total of 370 hours of data were recorded (no data rate specified) and 85% of the data had been telemetered before the accident. The recovery allowed them to get the majority of the rest.

    5. Re:only 400mb? by Tisha_AH · · Score: 2, Insightful

      Many of the science payloads are put together by universities and private corporations. The shuttle fleet frequently flies with an experiment rack.

      Experiments must fit within the constraints of the rack (power, size, cooling requirements). If you participated in any university based science programs you understand the limitations of funding. Creating a whiz-bang, cutting edge data storage technology is usually low on the list.

      The Xeon gas experiment probably had most of the work done on measurement instrumentation and software. IT hardware is off the shelf as much as possible.

      No one plans on the shuttle turning into a meteorite. I bet that the principal researcher was not going "gosh, I hope they can save my data" when they saw the pictures over central Texas.

      --
      Tisha Hayes
  16. Re:First post by trolltalk.com · · Score: 4, Funny

    You call THIS "recovered"??? More like "Houston,we have a problem ..."

    Error Executing Database Query.
    Data source rejected establishment of connection, message from server: "Too many connections"

    The error occurred in /home/httpd/customtags/parameters.cfm: line 22
    20 :
    21 :
    22 :
    23 : SELECT tag, value FROM parameters
    24 :

    SQL SELECT tag, value FROM parameters
    DATASOURCE blocksandfiles
    VENDORERRORCODE 1040
    SQLSTATE 08004

    Resources:
    Check the ColdFusion documentation to verify that you are using the correct syntax.
    Search the Knowledge Base to find a solution to your problem.

    Browser Opera/9.23 (X11; Linux i686; U; en)
    Remote Address 70.49.63.152
    Referrer http://blocksandfiles.com/article/5056
    Date/Time 07-May-08 07:30 PM

    Stack Trace
    at cfparameters2ecfm1715857017.runPage(/home/httpd/customtags/parameters.cfm:22) at cfApplication2ecfm1592932022.runPage(/home/httpd/vhosts/blocksandfiles.co.uk/sitedocs/Application.cfm:17)

    com.mysql.jdbc.exceptions.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections"
            at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:921)
            at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1055)
            at com.mysql.jdbc.Connection.createNewIO(Connection.java:2749)
            at com.mysql.jdbc.Connection.(Connection.java:1553)
            at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:285)
            at coldfusion.server.j2ee.sql.pool.JDBCPool.createPhysicalConnection(JDBCPool.java:562)
            at coldfusion.server.j2ee.sql.pool.ConnectionRunner$RunnableConnection.run(ConnectionRunner.java:67)
            at java.lang.Thread.run(Thread.java:619)

  17. Wrong Shuttle or wrong image name? by Thornburg · · Score: 5, Interesting

    If this experiment was on Columbia, why is the image called "Challenger_drive.jpg"?

    Challenger was many years earlier...

    1. Re:Wrong Shuttle or wrong image name? by sxltrex · · Score: 2, Informative

      The data recovered was from an experiment. I'm pretty sure they didn't have much time to perform experiments on Challenger's last flight.

    2. Re:Wrong Shuttle or wrong image name? by omnipresentbob · · Score: 2, Funny

      Because they were/are challenged?

    3. Re:Wrong Shuttle or wrong image name? by PCPackrat · · Score: 2, Informative

      Since the Challenger blew up before that kind of hard drive technology existed(1986), I'm pretty sure it's a mistake in picture naming.

    4. Re:Wrong Shuttle or wrong image name? by God_TM · · Score: 2, Informative

      According to logic, the image must be named improperly. Challenger blew up before going into space, and would have no data to recover from any experiments performed in space. Another possibility is the image is from the Challenger disaster as Columbia's drive photo wasn't available/released, but they threw in that photo as it's from a Space Shuttle disaster (ie: close enough).

    5. Re:Wrong Shuttle or wrong image name? by wjsteele · · Score: 3, Interesting

      Actually, the Challenger didn't blow up. The external tank collapsed due to the solid rocket motor burning through the external hydrogen tank. As the hydrogen tank collapsed, the mass of the shuttle was greatly reduced, which caused an acceleration of the entire vehicle assembly. That acceleration drove the remaining portion of the hydrogen tank into the oxygen tank causing it to also collapse. As the same time, the srb burned through it's rear attach point to the external tank, causing it to loose lateral stability. That instability allowed it to rotate (out of sync with the rest of the shuttle stack) which further weakened the external tank structure.

      As the external tank collapsed and the srb rotated, it rotated the shuttle so that it was no longer aligned with it's nose pointed towards the direction of travel. The aerodynamic forces became so extreme, that it overwhelmed the shuttle's structure.

      The shuttle was literally torn apart due to the aerodynamic forces. The explosion actually occurred after the collapse and breakup as the escaping oxygen and hydrogen ignited.

      Bill

      --
      It's my Sig and you can't have it. Mine! All Mine!
  18. More Informative Article at Scientific American by coasterfan · · Score: 2, Informative
  19. Re:Mounting Brackets by vecctor · · Score: 3, Informative

    The second photo on this link shows the inside of the drive:

    http://www.sciam.com/article.cfm?id=hard-drive-recovered-from-columbia&sc=rss

    (Link stolen from another post in this thread)

    --
    Why, yes I have been touched by His noodly appendage. And I plan to sue.
  20. Re:Mounting Brackets by vwjeff · · Score: 2, Informative
  21. Re:Mounting Brackets by Smidge204 · · Score: 5, Informative
  22. From Sci American.... by CBob · · Score: 2, Informative
  23. What about the temperature of re-entry? by Weaselmancer · · Score: 5, Insightful

    I'd say that's the part that makes this impressive. Re-entry is known to be pretty darn warm. And heat will scatter magnetic domains. Heat up a magnet - it's not a magnet anymore.

    Either this HD was in the center of a ball of stuff and didn't get very hot, or Seagate has some seriously awesome engineering going on.

    --
    Weaselmancer
    rediculous.
  24. Link to xenon experiment's extract by jdmonin · · Score: 5, Informative

    For anyone curious about the actual experiment whose data was recovered:

    The abstract for the science experiment is at http://link.aps.org/abstract/PRE/v77/e041116 (or in the table of contents issue is http://scitation.aip.org/dbt/dbt.jsp?KEY=PLEEE8&Volume=77&Issue=4 ).

    "We measured shear thinning, a viscosity decrease ordinarily associated with complex liquids, near the critical point of xenon. The data span a wide range of reduced shear rate ... The measurements had a temperature resolution of 0.01 mK and were conducted in microgravity aboard the Space Shuttle Columbia to avoid the density stratification caused by Earth's gravity."

  25. Data Replication by Spudster · · Score: 2, Insightful

    I'm somewhat amazed that a vehicle as well connected as the shuttle doesn't mirror its data to the ground controllers. In the event of a failure, an alternate copy of the data would exist and millions of dollars worth of experimental data wouldn't be at risk. On-track does however rock (Until you get the bill)!

  26. And the scientific article on CXV... by JustinOpinion · · Score: 2, Insightful
    And, for anyone interested (and who has a subscription), here's the article in Physical Review E that describes the scientific experiment and analysis of the recovered data:
    Robert F. Berg, Michael R. Moldover, Minwu Yao, Gregory A. Zimmerli Shear thinning near the critical point of xenon, Phys. Rev. E 77, 041116 (2008) doi 10.1103/PhysRevE.77.041116.

    In the article, they mention a bit about the data recovery:

    During the mission, the apparatus recorded 370 h of data, of which 85% were downlinked for real-time analysis. Fortunately, the hard disk drive was recovered from Columbia's debris in a condition that made 99% of the data available for analysis. Also quite interesting is an off-hand comment they make about the sample cell they used:

    Seven months after the Columbia disaster in 2003, the meniscus height was remeasured in the recovered sample cell... This suggests that in addition to getting the hard drive (and the data off the hard drive), the Columbia debris search also found the sample cell for their experiment, which allowed them to make some additional measurements for their data analysis. This is also quite impressive!

    The data-recovery aspect is quite interesting. So is the fundamental science. They had to run the experiment in micro-gravity to eliminate the density stratification that occurs for any liquid or gas subject to gravity. Shear thinning is a well-established and fairly well-understood phenomena in "complex fluids" (e.g. mixtures of solvents and polymers, like paints, lubricants, etc.); but it is quite interesting to have measured the effect in a pure one-component atomic gas. It's hard to imagine a simpler fluid, and yet it exhibits this interesting viscosity effect!

    I'm glad that this scientific experiment was salvaged from the otherwise tragic final mission of Challenger.
  27. Warranty Void by winphreak · · Score: 4, Funny

    "Product warranty is void if any seal or label is removed, or if drive experiences shock in excess of 350 Gs"

    --
    "I'm a well-wisher, in that I don't wish you any specific harm."
  28. How hard did it hit? by Darth_brooks · · Score: 2, Interesting

    I need a physics geek. Assume a 1kg weight, and assuming it was just "dropped" from 100,000 feet (that was roughly the altitude Columbia was at when things went sour), how fast would it have been going when it hit the ground? Obviously, this drive must have come down inside a much larger chunk of debris based on the shape it was in. I'm just wondering about how many G's it really took on impact.

    My assumption is that the drive probably wasn't going all that fast (in comparison to the 13,000 mph it was moving at on initial re-entry) when it hit.

    Of course, I wouldn't want to be standing under it when it hit the ground...

    --
    There are some people that if they don't know, you can't tell 'em.
  29. Re:Erm... picture says 'challenger drive'... by ceejayoz · · Score: 2, Informative

    Uh, 400 megabyte 3.5" hard drives in 1983? I don't think so...

  30. Maybe adds a little more meaning by dreamchaser · · Score: 2, Interesting

    At least the astronauts didn't die in vain. I mean, they didn't anyways since they all know there are risks, but recovering useful data from the drive adds maybe a tad more meaning to the loss.

  31. Best Way to Protect Data Against Data Recovery by Hoi+Polloi · · Score: 2, Interesting

    The best way to protect a supposedly cleaned hard drive against someone later trying to read the data is this or this.

    --
    It is by the juice of the coffee bean that thoughts acquire speed, the teeth acquire stains. The stains become a warning
  32. What else can be recovered? by heroine · · Score: 2, Funny

    There R probably a few drives in Calif* landfills, containing your underwear size from 1988, waiting to be recovered.

  33. Re:so which was it? by 3t3rn4l · · Score: 2, Funny

    They were unfortunately unable to recover the exact percentage. :(

    --
    "Everything right is wrong again, just like in a long, long trailer." --They Might Be Giants

    --
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt. (When catapults are outlawed, only outlaws will
  34. Re:First post by smittyoneeach · · Score: 3, Funny

    WTF? ColdFusion and Java? To serve a single static page?
    Well, there was some sed, awk, a dash of emacs in batch mode, python, some xalan and xlst in there (to simplify things).
    That "First post recovered !" business was really a debug string literal that crept in at one point.
    The expected output was, or course "Hello, World".
    We're obviously going to have to port some of this to Mono. Probably get a more impressive stack trace out of it, too: the line count that wimpy java business didn't even make double digits.
    How weak is that?
    --
    Get thee glass eyes, and, like a scurvy politician, seem to see things thou dost not.--King Lear
  35. One TOUGH DRIVE by Nonillion · · Score: 3, Interesting

    Did anyone else notice that the drive got so hot that the head controller IC was completely de-soldered. Just goes to show that if you want a hard drive destroyed you should have it shredded.

    http://www.ssiworld.com/watch/watch-en.htm

    --
    "I bow to no man" - Riddick
  36. #dd if=/dev/zero of=dev/disk by guabah · · Score: 2, Informative

    Followed by

    #dd if=dev/random of=dev/disk

    Works for me

  37. Re:First post by rbanffy · · Score: 3, Funny

    It's you! You are the one using Opera! ;-)

  38. Re:First post by Achromatic1978 · · Score: 2, Funny

    you've got balls, publishing your ip address on slashdot...

  39. Lead time is a good thing... by argent · · Score: 2, Informative

    Don't forget that the lead time on space experiments can be years, and you need to use equipment that was rated for space use when you specced it out... not when it went up... which adds even more lead time. Read up on the shuttle computers some time to get an idea of how conservative they are.

    And in this care it was a damn good thing: the higher the information density on the drive, the lower the chance of recovering the data... and they were right on the edge of the possible as it was.

  40. Re:Data are plural by Spatial · · Score: 2, Funny

    Pfft. It's just one android.

  41. Vibration degrades magnets by jake-in-a-box · · Score: 4, Funny

    I worked with hall-effect devices which we used to build tensiometers in the textiles industry. One of the problems we had was loss of sensitivity over time. The service lifetime of a unit was a year or so before it was returned to me for rebuild and recalibration. The reason was that the unit was used in an industrial setting with lots of vibration and noise. The magnets lost strength.

    All I had to do in many cases was to swap in a new set of magnets (and send the old ones out to be remagnetized). Then there were the clients that would turn the current up to compensate for the demagnetizing. They sent theirs back for a smoke refill after the smoke got out.

    --
    To hear the gods laugh tell them your plans.