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Ask Slashdot: Best Medium For Storing Data To Survive a Fire (or Other Disaster)

First time accepted submitter aka_bigred writes Every year as I file my taxes, I replicate my most important financial data (a couple GB of data) to store an offline copy in my fire-rated home safe. This gets me thinking about what the most reliable data media would be to keep in my fire-rated home safe.

CDs/DVDs/tapes could easily melt or warp rendering them useless, so I'm very hesitant to use them. I've seen more exotic solutions that let you print your digital data to paper an optically re-import it later should you ever need it, but it seems overly cumbersome and error prone should it be damaged or fire scorched. That leaves my best options being either a classic magnetic platter drive, or some sort of solid state storage, like SD cards, USB flash drives, or a small SSD. The problem is, I can't decide which would survive better if ever exposed to extreme temperatures, or water damage should my house burn down.

Most people would just suggest to store it in "the cloud", but I'm naturally averse to doing so because that means someone else is responsible for my data and I could lose it to hackers, the entity going out of business, etc. Once it leaves my home, I no longer fully control it, which is unacceptable. My thought being "they can't hack/steal what they can't physically access." What medium do other Slashdot users use to store their most important data (under say 5GB worth) in an at-home safe to protect it from fire?

36 of 446 comments (clear)

  1. Best medium by Anonymous Coward · · Score: 4, Funny

    Oral tradition. Seriously wtf

    1. Re:Best medium by davester666 · · Score: 5, Funny

      Have you tried repeating a story while on fire? I didn't think so.

      --
      Sleep your way to a whiter smile...date a dentist!
    2. Re:Best medium by Applehu+Akbar · · Score: 5, Funny

      Clay tablets, then. Fire actually improves their durability.

    3. Re:Best medium by RabidReindeer · · Score: 4, Funny

      Use the tablets to build walls with. Win-win!

  2. If you insist on keeping physical hardware by Anonymous Coward · · Score: 5, Informative

    There are fire rated NAS devices like the ioSafe 214 which has Synology guts.

    1. Re:If you insist on keeping physical hardware by Rei · · Score: 4, Interesting

      Or for something cheaper, M-Disc in a bucket of water. Water shouldn't get significantly over boiling in a fire (as it loses its heat by boiling off), and M-Disc is rated to withstand boiling water and not degrade from long-term water immersion (they're burned not by modifying a photosensitive dye like in normal discs, but by literally etching a hard, inorganic layer)

      --
      *Kid Rock runs for Senate* Democrats: We must run Kid Scissors.
    2. Re:If you insist on keeping physical hardware by ralphsiegler · · Score: 4, Interesting

      And that's folks is why extrapolating from a little book learning to try to engineer reality without experiment or experience leads to failure. A typical house fire burns at over a thousand degrees F for about half an hour. Not only will your water be gone, so will your plastic or steel aluminum bucket.

    3. Re:If you insist on keeping physical hardware by Rei · · Score: 5, Informative

      And that's folks is why

      And that's folks is why being an arse when you disagree with someone is usually mutually exclusive with being able to write proper English.

      The flames in a house fire can of course be "over a thousand degrees F". Most air in a burning house is below the boiling point of water. But hey, let's just assume that your bucket is sitting right on top of the ignition source of your house and somehow remains directly in flames underneath it for half an hour. Gee, what sort of analogy could we have for a large metal pot-like thing sitting on some gas stove-like flames... oh yeah, how about a pot sitting on a gas stove (whose flames can also be "over a thousand degrees F")? Because anyone who's ever put a large pot full of water on the stove (for example for canning) can tell you that it will NOT boil off in half an hour.

      And seriously, a steel bucket will be "gone"? Methinks you need to look up the melting point of steel.

      --
      *Kid Rock runs for Senate* Democrats: We must run Kid Scissors.
  3. Offsite by Anonymous Coward · · Score: 5, Insightful

    is the only safe solution.

    1. Re:Offsite by halltk1983 · · Score: 4, Insightful

      This. A safety deposit box at your bank is your best and safest bet. Encrypt the drive if you're worried that someone cares enough to go Italian Job on you.

      --
      Watch for Penguins, they eat Apples and throw rocks at Windows.
    2. Re:Offsite by DanielRavenNest · · Score: 4, Informative

      That's what bank safety deposit boxes are for. Offsite, hard to break into, more or less fireproof through sheer mass, even if the building around it burns. Ask the bank about how thick the walls are, though. Class 3 is recommended (12 inches thick concrete), with additional outside fireproofing.

    3. Re:Offsite by Anonymous Coward · · Score: 5, Informative

      Just make sure whatever you use is in a waterproof container. A friend had a fire at their bank and the safe deposit contents were soaked. Water apparently got through the small gaps in the front due to the high pressure.

    4. Re:Offsite by BLKMGK · · Score: 3, Informative

      Truecrypt volume on an external drive kept in a Tupperware container in a safety deposit box that's a duplicate of the one you keep at home in a safe. It's not an Italian Job I'd be worried about it would be someone in authority deciding they needed to have a peek. Chances of a fire at the bank AND at the home at the same time are pretty far fetched. Can sub friend's home for safety deposit box easily enough and maybe even do an exchange but use a locked box so said friend doesn't decide to use it to store his p0rn!

      --
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    5. Re:Offsite by turbidostato · · Score: 4, Informative

      "Offsite, or fireproof stuff. Your choice."

      No, fireproof is no substitute. If you really value your data, multiple copies, at least one of them off site is the only way to go.

      But, now we are talking about fireproof... that's not an absolute concept. The fireproof is rated for temperature outside, max temperature inside (or delta from outside) and time to stand it. First aka_bigred has to know is the rating of his vault: any support that can stand the internal temperature rate is valid; if the fire goes outside the rating, think of it as lost (you might be lucky though). I can attest recovering data from DAT tapes on vaults exposed around the limit of its rate.

    6. Re:Offsite by koinu · · Score: 3, Insightful

      I favour off-planet. Who knows how big the fire could get.

    7. Re:Offsite by AmiMoJo · · Score: 3, Funny

      Can't beat safety deposit boxes for storing your rare earth magnets either.

      --
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      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    8. Re:Offsite by AmiMoJo · · Score: 3, Informative

      Put descant in the tupperware box, otherwise moisture can condense over time, especially if temperature varies (A/C fails, fire etc.) You only need a tiny amount of moisture from the air in the box to ruin your drive by causing a short somewhere on the controller board.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
  4. Off Site by chill · · Score: 3, Insightful

    A couple of BD-Rs stored in a safe deep deposit box or over at a relative's house.

    --
    Learning HOW to think is more important than learning WHAT to think.
  5. Fire-Resistant Safe by Meditato · · Score: 5, Funny

    Drill a small hole into a fire-resistant safe where your power and SCSI/IDE/SATA/USB/ETH cables go, then put your drives in there. Won't be easily stolen and will likely survive a house fire. Googling the terms "fire-resistant safe" revealed dozens of good options.

    1. Re:Fire-Resistant Safe by melstav · · Score: 3, Interesting

      You (and other commenters) laugh at this idea,

      Admittedly, a DIY USB-connected solution will likely compromise the thermal insulation and waterproofing of the safe to some degree... But COTS USB-connected fire safes *DO* exist.

      For one example: http://www.sentrysafe.com/Prod...

  6. Store two digital copies, but keep one off-site by imccuaig · · Score: 3, Insightful

    Seriously, why go for some kind of difficult or expensive solution when low tech is cheaper and safer. It doesn't have to be the cloud, it could be encrypted and stored in your desk at work.

  7. The Cloud by kromozone · · Score: 4, Funny

    >Most people would just suggest to store it in "the cloud", but I'm naturally averse to doing so because that means someone else is responsible for my data and I could loose (sic) it to hackers, the entity going out of business, etc.

    Simply strongly encrypt your data before backing it up to the cloud, you will be at no risk of hackers or anyone else gaining access that way. If you can't find a cloud storage service that you trust/trust won't go out of business, you can make your own cloud using Amazon's AWS system. The levels of security at the facilities and redundancy mean your data will survive anything short of nuclear Armageddon. Personally I'd just go with the local encryption option.

  8. not what you asked by DriveDog · · Score: 3, Insightful

    I know this isn't what you asked, and I'm interested in hearing the answer to your question as well. But offsite is really the only safe alternative. Put copies on whatever media, then store them somewhere away from your house. If you have a place you feel is relatively secure at the office, put it there. Send it home with a trusted friend. Store it in your mom's basement (if you live elsewhere). Encrypt with a phrase you won't forget. Only a thermonuclear strike is likely to destroy all your copies, and if it does, I suspect you won't much care.

  9. Stone Tablet by penguinstorm · · Score: 4, Funny

    I've commissioned a stone mason to carve a backup of everything I have into solid blocks of granite. Since the type of information varies (text, photos, videos, etc) I've had the Mason translate everything to its raw binary state and carved in bit by bit (Ha! See what I did there!)

    These are stored in my living room, which is causing some difficulty in negotiating living space--but I feel that it's worth the sacrifice.

    Sure, he complains when I edit an existing document. He's hired an assistant just to keep my grocerylist.txt file up to date in the archive. I wanted to switch it to an XML structure, but I let him win that battle.

    As a recovery strategy in the even of a fire my plan is to outsource the data entry to an Indian firm and take advantage of global time zones and cheap labour. I expect to be back up and running within 7.2 years in the even of a catastrophic event, if my calculations are correct. The best thing is I've eliminated all risk of media becoming obsolete: my last archive was on a Syquest Ez 135--never let it be said that I haven't learned my lesson!

    --
    Skot Nelson music is my saviour / i was maimed by rock and roll
  10. get a fire proof data safe... Problem solved. by Karmashock · · Score: 3, Informative

    There are a line of fire proof safes out there that have ports that allow you to run cables into the back so you can store hard drives or SSDs or whatever in the safe... in the event of a fire, the insides of the safe should be fine.

    So... that is what I would do. I'd get some external drives, buy a data safe, and then put that next to the server where upon at given intervals the data is backed up to the externals in the fire proof data safe.

    --
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  11. Mobile backup by anchovy_chekov · · Score: 4, Funny

    OK, this is not a serious solution, but the way a company I worked for years ago managed this was hilarious. One of the managers put a server in the boot of his car and had it connect wirelessly to the file servers when it was parked in the office car park.

    Because he had to reverse his car in to bring the wifi into range, the joke "I'm just backing up the data" got played every time he did it. Suffice it to say, the joke got old pretty quick.

  12. Re:Encryption + (cloud or offsite) by Dragon+Bait · · Score: 5, Insightful

    Tar up your files. Encrypt with GPG and a 20 character random passphrase.

    Upload to a cloud service, and put on a USB drive at work and the house of a friend and relative.

    Why bother trying to find storage media made of unobtainium that can withstand fire or flood or theft, when you can simply and easily make a copy and store it multiple times in multiple places immune to most loss events?

    FTFY.

    Multiple backups. Multiple media types. Multiple locations.

  13. Re:Offsite... by TubeSteak · · Score: 4, Informative

    If you plan on having the medium survive your house burning down, it'll either have to be something really exotic(CNCed cuneiform tablets?) or something boring inside a sufficiently fireproof safe (which can get costly; but are a well recognized product category).

    Fireproof safes (actually fire resistant) are not what you want to use for storing electronics or cd/dvd/bd media.

    You specifically want a fire resistant "media" or "data" safe.

    The difference is that "fireproof" safes are intended to prevent paper from charring/burning, so their design allows for internal temperatures that are high enough to cook your electronics. Media/data safes maintain a significantly lower interior temperature (and humidity), which safeguards your relatively fragile electronic hardware.

    And it's not just enough to avoid high temperatures, your safe needs to be sealed against gasses.
    In a home fire, you have all types of corrosive and unpleasant chemicals that are created from burning plastics, toilet cleaner, etc.
    Those chemicals will generally attack any metal and plastic that they come into contact with (YMMV).

    TLDR: You get what you pay for, so get the right thing.

    --
    [Fuck Beta]
    o0t!
  14. Re:Offsite... by ckatko · · Score: 3, Interesting

    One thing of note, however. There's a huge difference between running temperature and temperature limits. A hard drive can sit in a very hot room and be fine, but it cannot be run in that hot room.

    If there wasn't a difference, soldering ovens wouldn't really be very useful.

  15. Re:Fire Rated Safe by Idarubicin · · Score: 3, Interesting

    Better check the documentation on your safe. Many are not designed to resist heat. They provide an oxygen sparse environment such that paper won't burn. Thats why you have to let them cool off afterwards, if you open them too soon the oxygen from outside hits very hot paper and it lights on fire.

    No.

    Underwriters' Laboratories (UL) certifications for fire are based on not exceeding a specified internal temperature (or humidity level) for a specified period of time. UL Class 350 safes, for instance, will maintain an internal temperature below 350 F, and humidity below 85%. This is fine for paper, but not for digital media. For those, you're looking for a safe (or safe + internal container) rated for Class 150 or Class 125 (150 F or 125 F), depending on your specific application.

    An airtight safe that still got hot inside wouldn't protect paper. Pyrolysis still takes place in the absence of oxygen, carbonizing any organic matter--including paper. (Heating wood under oxygen-starved conditions is how charcoal is made.)

    --
    ~Idarubicin
  16. Dig a hole in the back yard... by David_Hart · · Score: 4, Insightful

    Just dig a hole in the back yard and place the USB key or whatever in a water tight container and fill it in. Encrypting it would be a good idea too, just in case the neighbors dog digs it up. For something simple, you could try an otterbox drybox. These are used for kayaking and diving and are waterproof. The only problem might be cracking during the winter. You might want to dig below the frost line or put insulation around it.

    Another option would be to get an external shed and store stuff in there in a fire safe.

  17. Re:Encryption + (cloud or offsite) by dgatwood · · Score: 3, Funny

    Better idea: Encrypt the data, stick it on SD cards, and then mail them to random people. Be sure to email yourself with their addresses just in case you ever need to get the data back. Imagine the thrill they'll get from receiving a brand new 64 GB SD card in the mail for free!

    Then again, maybe that's not such a good idea. But it is still more reliable than cloud storage. :-D

    --

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  18. Not in the fire by Spazmania · · Score: 5, Insightful

    The most effective way for your data to survive a fire (or flood, tornado, lava, etc) is for it to not be in the fire. If you don't want to automate off-site backups then periodically drop a hard disk into a convenient bank safety deposit box.

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    1. Re:Not in the fire by Xest · · Score: 4, Funny

      Yeah, just not one stored in Hatton Garden, London.

    2. Re:Not in the fire by Kiaser+Zohsay · · Score: 5, Insightful

      If it's not off-site, it's not a backup. It's just another copy.

      --
      I am not your blowing wind, I am the lightning.
  19. Re:Cloud but hear me by Pieroxy · · Score: 4, Insightful

    Agreed. I use an alternative to all this: all my data is backed up on a small eeePC in my attic and send sent to a friend of mine through SSH. I have 1TB of data storage at his place, and I offer in return 1TB of data storage in my place for him to do the same.

    Sensitive stuff is encrypted so I don't care if he can see all my files. The bulk of it is pictures/personal movies in terms of size. encfs works wonders for low sensitive data, the rest can go through TrueCrypt/keepass2 encryption or even PGP.

    And it costs me zero (minus the 1TB I have reserved for him).